diff --git a/jest-disable-built-in-fetch.js b/jest-disable-built-in-fetch.js
deleted file mode 100644
index 462ddabb1..000000000
--- a/jest-disable-built-in-fetch.js
+++ /dev/null
@@ -1,5 +0,0 @@
-module.exports = function () {
-  // This is required for tests to work with "cross-fetch" on newer node versions,
-  // otherwise "cross-fetch" won't replace the builtin `fetch`
-  globalThis.fetch = undefined;
-};
diff --git a/jest.config.js b/jest.config.js
index d7c6aa417..1c52074f8 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -16,7 +16,6 @@ const config = {
     'jest-watch-typeahead/filename',
     'jest-watch-typeahead/testname',
   ],
-  globalSetup: './jest-disable-built-in-fetch.js',
   projects: [
     {
       preset: 'ts-jest',
@@ -28,6 +27,8 @@ const config = {
         'env/',
         'token.test.ts',
       ],
+      // make sure built-in Node.js fetch doesn't get replaced for consistency
+      globals: { fetch: global.fetch, AbortController: global.AbortController },
     },
     {
       preset: 'ts-jest',
diff --git a/package.json b/package.json
index 02a6d0048..8e54cab9c 100644
--- a/package.json
+++ b/package.json
@@ -84,7 +84,6 @@
     "@types/jest": "^29.5.11",
     "@typescript-eslint/eslint-plugin": "^6.19.0",
     "@typescript-eslint/parser": "^6.19.0",
-    "abort-controller": "^3.0.0",
     "brotli-size": "^4.0.0",
     "eslint": "^8.56.0",
     "eslint-config-prettier": "^9.1.0",
diff --git a/src/errors/http-error-handler.ts b/src/errors/http-error-handler.ts
deleted file mode 100644
index 78fb54f3e..000000000
--- a/src/errors/http-error-handler.ts
+++ /dev/null
@@ -1,44 +0,0 @@
-import { MeiliSearchCommunicationError } from './meilisearch-communication-error';
-import { MeiliSearchApiError } from './meilisearch-api-error';
-import { FetchError } from '../types';
-
-async function httpResponseErrorHandler(response: Response): Promise<Response> {
-  if (!response.ok) {
-    let responseBody;
-    try {
-      // If it is not possible to parse the return body it means there is none
-      // In which case it is a communication error with the Meilisearch instance
-      responseBody = await response.json();
-    } catch (e: any) {
-      // Not sure on how to test this part of the code.
-      throw new MeiliSearchCommunicationError(
-        response.statusText,
-        response,
-        response.url,
-      );
-    }
-    // If the body is parsable, then it means Meilisearch returned a body with
-    // information on the error.
-    throw new MeiliSearchApiError(responseBody, response.status);
-  }
-
-  return response;
-}
-
-function httpErrorHandler(
-  response: FetchError,
-  stack?: string,
-  url?: string,
-): Promise<void> {
-  if (response.name !== 'MeiliSearchApiError') {
-    throw new MeiliSearchCommunicationError(
-      response.message,
-      response,
-      url,
-      stack,
-    );
-  }
-  throw response;
-}
-
-export { httpResponseErrorHandler, httpErrorHandler };
diff --git a/src/errors/index.ts b/src/errors/index.ts
index 02fe08114..27ff6676f 100644
--- a/src/errors/index.ts
+++ b/src/errors/index.ts
@@ -1,6 +1,5 @@
-export * from './http-error-handler';
 export * from './meilisearch-api-error';
-export * from './meilisearch-communication-error';
+export * from './meilisearch-request-error';
 export * from './meilisearch-error';
 export * from './meilisearch-timeout-error';
 export * from './version-hint-message';
diff --git a/src/errors/meilisearch-api-error.ts b/src/errors/meilisearch-api-error.ts
index b08866d5c..68121074f 100644
--- a/src/errors/meilisearch-api-error.ts
+++ b/src/errors/meilisearch-api-error.ts
@@ -1,30 +1,20 @@
-import { MeiliSearchErrorInfo } from '../types';
+import { MeiliSearchErrorResponse } from '../types';
 import { MeiliSearchError } from './meilisearch-error';
 
-const MeiliSearchApiError = class extends MeiliSearchError {
-  httpStatus: number;
-  code: string;
-  link: string;
-  type: string;
-  stack?: string;
+export class MeiliSearchApiError extends MeiliSearchError {
+  override name = 'MeiliSearchApiError';
+  override cause?: MeiliSearchErrorResponse;
+  readonly response: Response;
 
-  constructor(error: MeiliSearchErrorInfo, status: number) {
-    super(error.message);
+  constructor(response: Response, responseBody?: MeiliSearchErrorResponse) {
+    super(
+      responseBody?.message ?? `${response.status}: ${response.statusText}`,
+    );
 
-    // Make errors comparison possible. ex: error instanceof MeiliSearchApiError.
-    Object.setPrototypeOf(this, MeiliSearchApiError.prototype);
+    this.response = response;
 
-    this.name = 'MeiliSearchApiError';
-
-    this.code = error.code;
-    this.type = error.type;
-    this.link = error.link;
-    this.message = error.message;
-    this.httpStatus = status;
-
-    if (Error.captureStackTrace) {
-      Error.captureStackTrace(this, MeiliSearchApiError);
+    if (responseBody !== undefined) {
+      this.cause = responseBody;
     }
   }
-};
-export { MeiliSearchApiError };
+}
diff --git a/src/errors/meilisearch-communication-error.ts b/src/errors/meilisearch-communication-error.ts
deleted file mode 100644
index 92fe8e865..000000000
--- a/src/errors/meilisearch-communication-error.ts
+++ /dev/null
@@ -1,47 +0,0 @@
-import { FetchError } from '../types';
-import { MeiliSearchError } from './meilisearch-error';
-
-class MeiliSearchCommunicationError extends MeiliSearchError {
-  statusCode?: number;
-  errno?: string;
-  code?: string;
-  stack?: string;
-
-  constructor(
-    message: string,
-    body: Response | FetchError,
-    url?: string,
-    stack?: string,
-  ) {
-    super(message);
-
-    // Make errors comparison possible. ex: error instanceof MeiliSearchCommunicationError.
-    Object.setPrototypeOf(this, MeiliSearchCommunicationError.prototype);
-
-    this.name = 'MeiliSearchCommunicationError';
-
-    if (body instanceof Response) {
-      this.message = body.statusText;
-      this.statusCode = body.status;
-    }
-    if (body instanceof Error) {
-      this.errno = body.errno;
-      this.code = body.code;
-    }
-    if (stack) {
-      this.stack = stack;
-      this.stack = this.stack?.replace(/(TypeError|FetchError)/, this.name);
-      this.stack = this.stack?.replace(
-        'Failed to fetch',
-        `request to ${url} failed, reason: connect ECONNREFUSED`,
-      );
-      this.stack = this.stack?.replace('Not Found', `Not Found: ${url}`);
-    } else {
-      if (Error.captureStackTrace) {
-        Error.captureStackTrace(this, MeiliSearchCommunicationError);
-      }
-    }
-  }
-}
-
-export { MeiliSearchCommunicationError };
diff --git a/src/errors/meilisearch-error.ts b/src/errors/meilisearch-error.ts
index 39dff83ae..09c33e7c9 100644
--- a/src/errors/meilisearch-error.ts
+++ b/src/errors/meilisearch-error.ts
@@ -1,16 +1,7 @@
-class MeiliSearchError extends Error {
-  constructor(message: string) {
-    super(message);
+export class MeiliSearchError extends Error {
+  override name = 'MeiliSearchError';
 
-    // Make errors comparison possible. ex: error instanceof MeiliSearchError.
-    Object.setPrototypeOf(this, MeiliSearchError.prototype);
-
-    this.name = 'MeiliSearchError';
-
-    if (Error.captureStackTrace) {
-      Error.captureStackTrace(this, MeiliSearchError);
-    }
+  constructor(...params: ConstructorParameters<typeof Error>) {
+    super(...params);
   }
 }
-
-export { MeiliSearchError };
diff --git a/src/errors/meilisearch-request-error.ts b/src/errors/meilisearch-request-error.ts
new file mode 100644
index 000000000..aef8e429b
--- /dev/null
+++ b/src/errors/meilisearch-request-error.ts
@@ -0,0 +1,9 @@
+import { MeiliSearchError } from './meilisearch-error';
+
+export class MeiliSearchRequestError extends MeiliSearchError {
+  override name = 'MeiliSearchRequestError';
+
+  constructor(url: string, cause: unknown) {
+    super(`Request to ${url} has failed`, { cause });
+  }
+}
diff --git a/src/errors/meilisearch-timeout-error.ts b/src/errors/meilisearch-timeout-error.ts
index 91b5f2d86..e6730e8a9 100644
--- a/src/errors/meilisearch-timeout-error.ts
+++ b/src/errors/meilisearch-timeout-error.ts
@@ -1,18 +1,9 @@
 import { MeiliSearchError } from './meilisearch-error';
 
-class MeiliSearchTimeOutError extends MeiliSearchError {
+export class MeiliSearchTimeOutError extends MeiliSearchError {
+  override name = 'MeiliSearchTimeOutError';
+
   constructor(message: string) {
     super(message);
-
-    // Make errors comparison possible. ex: error instanceof MeiliSearchTimeOutError.
-    Object.setPrototypeOf(this, MeiliSearchTimeOutError.prototype);
-
-    this.name = 'MeiliSearchTimeOutError';
-
-    if (Error.captureStackTrace) {
-      Error.captureStackTrace(this, MeiliSearchTimeOutError);
-    }
   }
 }
-
-export { MeiliSearchTimeOutError };
diff --git a/src/http-requests.ts b/src/http-requests.ts
index 90399403d..96e2b606e 100644
--- a/src/http-requests.ts
+++ b/src/http-requests.ts
@@ -3,8 +3,8 @@ import { PACKAGE_VERSION } from './package-version';
 
 import {
   MeiliSearchError,
-  httpResponseErrorHandler,
-  httpErrorHandler,
+  MeiliSearchApiError,
+  MeiliSearchRequestError,
 } from './errors';
 
 import { addTrailingSlash, addProtocolIfNotPresent } from './utils';
@@ -143,35 +143,36 @@ class HttpRequests {
     }
 
     const headers = { ...this.headers, ...config.headers };
+    const responsePromise = this.fetchWithTimeout(
+      constructURL.toString(),
+      {
+        ...config,
+        ...this.requestConfig,
+        method,
+        body,
+        headers,
+      },
+      this.requestTimeout,
+    );
 
-    try {
-      const result = this.fetchWithTimeout(
-        constructURL.toString(),
-        {
-          ...config,
-          ...this.requestConfig,
-          method,
-          body,
-          headers,
-        },
-        this.requestTimeout,
-      );
-
-      // When using a custom HTTP client, the response is returned to allow the user to parse/handle it as they see fit
-      if (this.httpClient) {
-        return await result;
-      }
+    const response = await responsePromise.catch((error: unknown) => {
+      throw new MeiliSearchRequestError(constructURL.toString(), error);
+    });
+
+    // When using a custom HTTP client, the response is returned to allow the user to parse/handle it as they see fit
+    if (this.httpClient !== undefined) {
+      return response;
+    }
 
-      const response = await result.then((res: any) =>
-        httpResponseErrorHandler(res),
-      );
-      const parsedBody = await response.json().catch(() => undefined);
+    const responseBody = await response.text();
+    const parsedResponse =
+      responseBody === '' ? undefined : JSON.parse(responseBody);
 
-      return parsedBody;
-    } catch (e: any) {
-      const stack = e.stack;
-      httpErrorHandler(e, stack, constructURL.toString());
+    if (!response.ok) {
+      throw new MeiliSearchApiError(response, parsedResponse);
     }
+
+    return parsedResponse;
   }
 
   async fetchWithTimeout(
diff --git a/src/indexes.ts b/src/indexes.ts
index d1fe24c0f..85c30bf62 100644
--- a/src/indexes.ts
+++ b/src/indexes.ts
@@ -9,7 +9,7 @@
 
 import {
   MeiliSearchError,
-  MeiliSearchCommunicationError,
+  MeiliSearchRequestError,
   versionErrorHintMessage,
   MeiliSearchApiError,
 } from './errors';
@@ -380,7 +380,7 @@ class Index<T extends Record<string, any> = Record<string, any>> {
           Promise<ResourceResults<D[]>>
         >(url, parameters);
       } catch (e) {
-        if (e instanceof MeiliSearchCommunicationError) {
+        if (e instanceof MeiliSearchRequestError) {
           e.message = versionErrorHintMessage(e.message, 'getDocuments');
         } else if (e instanceof MeiliSearchApiError) {
           e.message = versionErrorHintMessage(e.message, 'getDocuments');
@@ -605,10 +605,7 @@ class Index<T extends Record<string, any> = Record<string, any>> {
 
       return new EnqueuedTask(task);
     } catch (e) {
-      if (
-        e instanceof MeiliSearchCommunicationError &&
-        isDocumentsDeletionQuery
-      ) {
+      if (e instanceof MeiliSearchRequestError && isDocumentsDeletionQuery) {
         e.message = versionErrorHintMessage(e.message, 'deleteDocuments');
       } else if (e instanceof MeiliSearchApiError) {
         e.message = versionErrorHintMessage(e.message, 'deleteDocuments');
diff --git a/src/types/types.ts b/src/types/types.ts
index 71c635ef0..7406b88c0 100644
--- a/src/types/types.ts
+++ b/src/types/types.ts
@@ -566,7 +566,7 @@ export type TaskObject = Omit<EnqueuedTaskObject, 'taskUid'> & {
     // Query parameters used to filter the tasks
     originalFilter?: string;
   };
-  error: MeiliSearchErrorInfo | null;
+  error: MeiliSearchErrorResponse | null;
   duration: string;
   startedAt: string;
   finishedAt: string;
@@ -675,13 +675,16 @@ export interface FetchError extends Error {
   code: string;
 }
 
-export type MeiliSearchErrorInfo = {
-  code: string;
-  link: string;
+export type MeiliSearchErrorResponse = {
   message: string;
+  // @TODO: Could be typed, but will it be kept updated? https://www.meilisearch.com/docs/reference/errors/error_codes
+  code: string;
+  // @TODO: Could be typed https://www.meilisearch.com/docs/reference/errors/overview#errors
   type: string;
+  link: string;
 };
 
+// @TODO: This doesn't seem to be up to date, and its usefullness comes into question.
 export const ErrorStatusCode = {
   /** @see https://www.meilisearch.com/docs/reference/errors/error_codes#index_creation_failed */
   INDEX_CREATION_FAILED: 'index_creation_failed',
diff --git a/tests/client.test.ts b/tests/client.test.ts
index 657fa19d6..ab34088fa 100644
--- a/tests/client.test.ts
+++ b/tests/client.test.ts
@@ -56,11 +56,11 @@ describe.each([
       apiKey: key,
       requestConfig: {
         headers: {
-          Expect: '200-OK',
+          'Hello-There!': 'General Kenobi',
         },
       },
     });
-    expect(client.httpRequest.headers['Expect']).toBe('200-OK');
+    expect(client.httpRequest.headers['Hello-There!']).toBe('General Kenobi');
     const health = await client.isHealthy();
     expect(health).toBe(true);
   });
@@ -71,10 +71,10 @@ describe.each([
       ...config,
       apiKey: key,
       requestConfig: {
-        headers: [['Expect', '200-OK']],
+        headers: [['Hello-There!', 'General Kenobi']],
       },
     });
-    expect(client.httpRequest.headers['Expect']).toBe('200-OK');
+    expect(client.httpRequest.headers['Hello-There!']).toBe('General Kenobi');
     const health = await client.isHealthy();
     expect(health).toBe(true);
   });
@@ -82,7 +82,7 @@ describe.each([
   test(`${permission} key: Create client with custom headers (Headers)`, async () => {
     const key = await getKey(permission);
     const headers = new Headers();
-    headers.append('Expect', '200-OK');
+    headers.append('Hello-There!', 'General Kenobi');
     const client = new MeiliSearch({
       ...config,
       apiKey: key,
@@ -90,7 +90,7 @@ describe.each([
         headers,
       },
     });
-    expect(client.httpRequest.headers.expect).toBe('200-OK');
+    expect(client.httpRequest.headers['hello-there!']).toBe('General Kenobi');
     const health = await client.isHealthy();
     expect(health).toBe(true);
   });
@@ -107,7 +107,7 @@ describe.each([
       expect(health).toBe(false); // Left here to trigger failed test if error is not thrown
     } catch (e: any) {
       expect(e.message).toMatch(`${BAD_HOST}/api/health`);
-      expect(e.name).toBe('MeiliSearchCommunicationError');
+      expect(e.name).toBe('MeiliSearchRequestError');
     }
   });
 
@@ -123,7 +123,7 @@ describe.each([
       expect(health).toBe(false); // Left here to trigger failed test if error is not thrown
     } catch (e: any) {
       expect(e.message).toMatch(`${BAD_HOST}/api/health`);
-      expect(e.name).toBe('MeiliSearchCommunicationError');
+      expect(e.name).toBe('MeiliSearchRequestError');
     }
   });
 
@@ -139,7 +139,7 @@ describe.each([
       expect(health).toBe(false); // Left here to trigger failed test if error is not thrown
     } catch (e: any) {
       expect(e.message).toMatch(`${BAD_HOST}//health`);
-      expect(e.name).toBe('MeiliSearchCommunicationError');
+      expect(e.name).toBe('MeiliSearchRequestError');
     }
   });
 
@@ -155,7 +155,7 @@ describe.each([
       expect(health).toBe(false); // Left here to trigger failed test if error is not thrown
     } catch (e: any) {
       expect(e.message).toMatch(`${BAD_HOST}/health`);
-      expect(e.name).toBe('MeiliSearchCommunicationError');
+      expect(e.name).toBe('MeiliSearchRequestError');
     }
   });
 
@@ -164,7 +164,7 @@ describe.each([
     try {
       await client.health();
     } catch (e: any) {
-      expect(e.name).toEqual('MeiliSearchCommunicationError');
+      expect(e.name).toEqual('MeiliSearchRequestError');
     }
   });
 
@@ -203,12 +203,12 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
         apiKey: key,
         requestConfig: {
           headers: {
-            Expect: '200-OK',
+            'Hello-There!': 'General Kenobi',
           },
         },
       });
       expect(client.config.requestConfig?.headers).toStrictEqual({
-        Expect: '200-OK',
+        'Hello-There!': 'General Kenobi',
       });
       const health = await client.isHealthy();
 
@@ -365,7 +365,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
         const client = await getClient(permission);
 
         await expect(client.getIndex('does_not_exist')).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.INDEX_NOT_FOUND,
         );
       });
@@ -439,7 +439,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
         const client = await getClient(permission);
         const index = client.index(indexPk.uid);
         await expect(index.getRawInfo()).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.INDEX_NOT_FOUND,
         );
       });
@@ -505,7 +505,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
         ];
 
         await expect(client.swapIndexes(swaps)).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.INVALID_SWAP_DUPLICATE_INDEX_FOUND,
         );
       });
@@ -563,7 +563,7 @@ describe.each([{ permission: 'Search' }])(
       test(`${permission} key: try to get all indexes and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.getIndexes()).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.INVALID_API_KEY,
         );
       });
@@ -574,13 +574,13 @@ describe.each([{ permission: 'Search' }])(
           client.createIndex(indexPk.uid, {
             primaryKey: indexPk.primaryKey,
           }),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+        ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
       });
 
       test(`${permission} key: try to create Index with NO primary key and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.createIndex(indexNoPk.uid)).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.INVALID_API_KEY,
         );
       });
@@ -588,7 +588,7 @@ describe.each([{ permission: 'Search' }])(
       test(`${permission} key: try to delete index and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.deleteIndex(indexPk.uid)).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.INVALID_API_KEY,
         );
       });
@@ -599,7 +599,7 @@ describe.each([{ permission: 'Search' }])(
           client.updateIndex(indexPk.uid, {
             primaryKey: indexPk.primaryKey,
           }),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+        ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
       });
     });
 
@@ -616,7 +616,7 @@ describe.each([{ permission: 'Search' }])(
       test(`${permission} key: try to get version and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.getVersion()).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.INVALID_API_KEY,
         );
       });
@@ -624,7 +624,7 @@ describe.each([{ permission: 'Search' }])(
       test(`${permission} key: try to get /stats information and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.getStats()).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.INVALID_API_KEY,
         );
       });
@@ -643,7 +643,7 @@ describe.each([{ permission: 'No' }])(
       test(`${permission} key: try to get all indexes and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.getIndexes()).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -655,7 +655,7 @@ describe.each([{ permission: 'No' }])(
             primaryKey: indexPk.primaryKey,
           }),
         ).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -663,7 +663,7 @@ describe.each([{ permission: 'No' }])(
       test(`${permission} key: try to create Index with NO primary key and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.createIndex(indexNoPk.uid)).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -671,7 +671,7 @@ describe.each([{ permission: 'No' }])(
       test(`${permission} key: try to delete index and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.deleteIndex(indexPk.uid)).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -683,7 +683,7 @@ describe.each([{ permission: 'No' }])(
             primaryKey: indexPk.primaryKey,
           }),
         ).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -702,7 +702,7 @@ describe.each([{ permission: 'No' }])(
       test(`${permission} key: try to get version and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.getVersion()).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -710,7 +710,7 @@ describe.each([{ permission: 'No' }])(
       test(`${permission} key: try to get /stats information and be denied`, async () => {
         const client = await getClient(permission);
         await expect(client.getStats()).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -729,10 +729,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.getIndex(indexPk.uid)).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -742,10 +739,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.createIndex(indexPk.uid)).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -755,10 +749,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.updateIndex(indexPk.uid)).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -768,10 +759,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.deleteIndex(indexPk.uid)).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -781,10 +769,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.getIndexes()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -794,10 +779,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.getKeys()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -807,10 +789,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.health()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -820,10 +799,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.getStats()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -833,10 +809,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.getVersion()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/dictionary.test.ts b/tests/dictionary.test.ts
index 123966650..4da655462 100644
--- a/tests/dictionary.test.ts
+++ b/tests/dictionary.test.ts
@@ -87,10 +87,7 @@ describe.each([
       client.index(index.uid).getDictionary(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -102,10 +99,7 @@ describe.each([
       client.index(index.uid).updateDictionary([]),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -117,10 +111,7 @@ describe.each([
       client.index(index.uid).resetDictionary(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/displayed_attributes.test.ts b/tests/displayed_attributes.test.ts
index c5cba1467..938df5856 100644
--- a/tests/displayed_attributes.test.ts
+++ b/tests/displayed_attributes.test.ts
@@ -88,21 +88,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getDisplayedAttributes(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update displayed attributes and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateDisplayedAttributes([]),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset displayed attributes and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetDisplayedAttributes(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -122,7 +122,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getDisplayedAttributes(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -132,7 +132,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updateDisplayedAttributes([]),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -142,7 +142,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetDisplayedAttributes(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -162,10 +162,7 @@ describe.each([
       client.index(index.uid).getDisplayedAttributes(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -177,10 +174,7 @@ describe.each([
       client.index(index.uid).updateDisplayedAttributes([]),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -192,10 +186,7 @@ describe.each([
       client.index(index.uid).resetDisplayedAttributes(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/distinct_attribute.test.ts b/tests/distinct_attribute.test.ts
index b579b5f49..0797ab18a 100644
--- a/tests/distinct_attribute.test.ts
+++ b/tests/distinct_attribute.test.ts
@@ -81,21 +81,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getDistinctAttribute(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update distinct attribute and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateDistinctAttribute('title'),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset distinct attribute and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetDistinctAttribute(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -112,7 +112,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getDistinctAttribute(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -122,7 +122,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updateDistinctAttribute('title'),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -132,7 +132,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetDistinctAttribute(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -152,10 +152,7 @@ describe.each([
       client.index(index.uid).getDistinctAttribute(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -167,10 +164,7 @@ describe.each([
       client.index(index.uid).updateDistinctAttribute('a'),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -182,10 +176,7 @@ describe.each([
       client.index(index.uid).resetDistinctAttribute(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/documents.test.ts b/tests/documents.test.ts
index 97967c044..8cb232e26 100644
--- a/tests/documents.test.ts
+++ b/tests/documents.test.ts
@@ -157,7 +157,7 @@ describe('Documents tests', () => {
         expect(documents.results.length).toEqual(2);
       });
 
-      test(`${permission} key: Get documents should trigger error with a MeilisearchCommunicationError`, async () => {
+      test(`${permission} key: Get documents should trigger error with a MeilisearchRequestError`, async () => {
         const apiKey = await getKey(permission);
         const client = new MeiliSearch({ host: `${HOST}/indexes`, apiKey });
 
@@ -169,7 +169,7 @@ describe('Documents tests', () => {
           );
         } catch (e: any) {
           expect(e.message).toEqual(
-            "Not Found\nHint: It might not be working because maybe you're not up to date with the Meilisearch version that getDocuments call requires.",
+            "404: Not Found\nHint: It might not be working because maybe you're not up to date with the Meilisearch version that getDocuments call requires.",
           );
         }
       });
@@ -665,7 +665,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         }
       });
 
-      test(`${permission} key: Delete some documents should trigger error with a hint on a MeilisearchCommunicationError`, async () => {
+      test(`${permission} key: Delete some documents should trigger error with a hint on a MeilisearchRequestError`, async () => {
         const apiKey = await getKey(permission);
         const client = new MeiliSearch({ host: `${HOST}/indexes`, apiKey });
 
@@ -677,7 +677,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
           );
         } catch (e: any) {
           expect(e.message).toEqual(
-            "Not Found\nHint: It might not be working because maybe you're not up to date with the Meilisearch version that deleteDocuments call requires.",
+            "404: Not Found\nHint: It might not be working because maybe you're not up to date with the Meilisearch version that deleteDocuments call requires.",
           );
         }
       });
@@ -706,14 +706,20 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         const client = await getClient(permission);
         await expect(
           client.index(indexNoPk.uid).getDocument(1),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.DOCUMENT_NOT_FOUND);
+        ).rejects.toHaveProperty(
+          'cause.code',
+          ErrorStatusCode.DOCUMENT_NOT_FOUND,
+        );
       });
 
       test(`${permission} key: Try to get deleted document from index that has a primary key`, async () => {
         const client = await getClient(permission);
         await expect(
           client.index(indexPk.uid).getDocument(1),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.DOCUMENT_NOT_FOUND);
+        ).rejects.toHaveProperty(
+          'cause.code',
+          ErrorStatusCode.DOCUMENT_NOT_FOUND,
+        );
       });
 
       test(`${permission} key: Add documents from index with no primary key by giving a primary key as parameter`, async () => {
@@ -788,42 +794,42 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         const client = await getClient(permission);
         await expect(
           client.index(indexPk.uid).addDocuments([]),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+        ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
       });
 
       test(`${permission} key: Try to update documents and be denied`, async () => {
         const client = await getClient(permission);
         await expect(
           client.index(indexPk.uid).updateDocuments([]),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+        ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
       });
 
       test(`${permission} key: Try to get documents and be denied`, async () => {
         const client = await getClient(permission);
         await expect(
           client.index(indexPk.uid).getDocuments<Book>(),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+        ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
       });
 
       test(`${permission} key: Try to delete one document and be denied`, async () => {
         const client = await getClient(permission);
         await expect(
           client.index(indexPk.uid).deleteDocument(1),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+        ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
       });
 
       test(`${permission} key: Try to delete some documents and be denied`, async () => {
         const client = await getClient(permission);
         await expect(
           client.index(indexPk.uid).deleteDocuments([1, 2]),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+        ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
       });
 
       test(`${permission} key: Try to delete all documents and be denied`, async () => {
         const client = await getClient(permission);
         await expect(
           client.index(indexPk.uid).deleteAllDocuments(),
-        ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+        ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
       });
     },
   );
@@ -840,7 +846,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         await expect(
           client.index(indexPk.uid).addDocuments([]),
         ).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -850,7 +856,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         await expect(
           client.index(indexPk.uid).updateDocuments([]),
         ).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -860,7 +866,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         await expect(
           client.index(indexPk.uid).getDocuments<Book>(),
         ).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -870,7 +876,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         await expect(
           client.index(indexPk.uid).deleteDocument(1),
         ).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -880,7 +886,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         await expect(
           client.index(indexPk.uid).deleteDocuments([1, 2]),
         ).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -890,7 +896,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         await expect(
           client.index(indexPk.uid).deleteAllDocuments(),
         ).rejects.toHaveProperty(
-          'code',
+          'cause.code',
           ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
         );
       });
@@ -910,10 +916,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         client.index(indexPk.uid).getDocument(1),
       ).rejects.toHaveProperty(
         'message',
-        `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-          'http://',
-          '',
-        )}`,
+        `Request to ${strippedHost}/${route} has failed`,
       );
     });
 
@@ -925,10 +928,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         client.index(indexPk.uid).getDocuments<Book>(),
       ).rejects.toHaveProperty(
         'message',
-        `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-          'http://',
-          '',
-        )}`,
+        `Request to ${strippedHost}/${route} has failed`,
       );
     });
 
@@ -940,10 +940,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         client.index(indexPk.uid).addDocuments([]),
       ).rejects.toHaveProperty(
         'message',
-        `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-          'http://',
-          '',
-        )}`,
+        `Request to ${strippedHost}/${route} has failed`,
       );
     });
 
@@ -955,10 +952,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         client.index(indexPk.uid).updateDocuments([]),
       ).rejects.toHaveProperty(
         'message',
-        `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-          'http://',
-          '',
-        )}`,
+        `Request to ${strippedHost}/${route} has failed`,
       );
     });
 
@@ -970,10 +964,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         client.index(indexPk.uid).deleteDocument('1'),
       ).rejects.toHaveProperty(
         'message',
-        `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-          'http://',
-          '',
-        )}`,
+        `Request to ${strippedHost}/${route} has failed`,
       );
     });
 
@@ -985,10 +976,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         client.index(indexPk.uid).deleteDocuments([]),
       ).rejects.toHaveProperty(
         'message',
-        `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-          'http://',
-          '',
-        )}`,
+        `Request to ${strippedHost}/${route} has failed`,
       );
     });
 
@@ -1000,10 +988,7 @@ Hint: It might not be working because maybe you're not up to date with the Meili
         client.index(indexPk.uid).deleteAllDocuments(),
       ).rejects.toHaveProperty(
         'message',
-        `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-          'http://',
-          '',
-        )}`,
+        `Request to ${strippedHost}/${route} has failed`,
       );
     });
   });
diff --git a/tests/dump.test.ts b/tests/dump.test.ts
index 39c684072..f23872aef 100644
--- a/tests/dump.test.ts
+++ b/tests/dump.test.ts
@@ -29,7 +29,7 @@ describe.each([{ permission: 'Search' }])(
     test(`${permission} key: try to create dump with search key and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.createDump()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INVALID_API_KEY,
       );
     });
@@ -42,7 +42,7 @@ describe.each([{ permission: 'No' }])(
     test(`${permission} key: try to create dump with no key and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.createDump()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -61,10 +61,7 @@ describe.each([
 
     await expect(client.createDump()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/embedders.test.ts b/tests/embedders.test.ts
index 60748756f..73d58745c 100644
--- a/tests/embedders.test.ts
+++ b/tests/embedders.test.ts
@@ -152,7 +152,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
       const task: EnqueuedTask = await client
         .index(index.uid)
         .updateEmbedders(newEmbedder);
-      await client.waitForTask(task.taskUid);
+      await client.waitForTask(task.taskUid, { timeOutMs: 60_000 });
 
       const response: Embedders = await client.index(index.uid).getEmbedders();
 
@@ -302,10 +302,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(index.uid).getEmbedders()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -317,10 +314,7 @@ describe.each([
       client.index(index.uid).updateEmbedders({}),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -332,10 +326,7 @@ describe.each([
       client.index(index.uid).resetEmbedders(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/errors.test.ts b/tests/errors.test.ts
index 9eb79dc84..4b6541f88 100644
--- a/tests/errors.test.ts
+++ b/tests/errors.test.ts
@@ -2,7 +2,7 @@ import { MeiliSearch } from './utils/meilisearch-test-utils';
 import {
   MeiliSearchError,
   MeiliSearchApiError,
-  MeiliSearchCommunicationError,
+  MeiliSearchRequestError,
   MeiliSearchTimeOutError,
 } from '../src/errors';
 import 'jest-fetch-mock';
@@ -12,70 +12,40 @@ fetchMock.enableMocks();
 
 jest.setTimeout(100 * 1000);
 
+// @TODO: Have to review this in more detail
 describe('Test on updates', () => {
   beforeEach(() => {
     fetchMock.mockReset();
   });
 
-  test(`Throw MeiliSearchCommunicationError when throwned error is not MeiliSearchApiError`, async () => {
+  test(`Throw MeilisearchRequestError when throwned error is not MeiliSearchApiError`, async () => {
     fetchMock.mockReject(new Error('fake error message'));
     const client = new MeiliSearch({ host: 'http://localhost:9345' });
     try {
       await client.health();
     } catch (e: any) {
-      expect(e.name).toEqual('MeiliSearchCommunicationError');
+      expect(e.name).toEqual('MeiliSearchRequestError');
     }
   });
 
-  test(`Not throw MeiliSearchCommunicationError when throwned error is MeiliSearchApiError`, async () => {
-    fetchMock.mockReject(
-      new MeiliSearchApiError(
-        {
-          message: 'Some error',
-          code: 'some_error',
-          type: 'random_error',
-          link: 'a link',
-        },
-        404,
-      ),
-    );
-
-    const client = new MeiliSearch({ host: 'http://localhost:9345' });
-    try {
-      await client.health();
-    } catch (e: any) {
-      expect(e.name).toEqual('MeiliSearchApiError');
-    }
-  });
-
-  test('MeiliSearchApiError can be compared with the instanceof operator', async () => {
-    fetchMock.mockReject(
-      new MeiliSearchApiError(
-        {
-          message: 'Some error',
-          code: 'some_error',
-          type: 'random_error',
-          link: 'a link',
-        },
-        404,
-      ),
-    );
-
-    const client = new MeiliSearch({ host: 'http://localhost:9345' });
-    try {
-      await client.health();
-    } catch (e: any) {
-      expect(e instanceof MeiliSearchApiError).toEqual(true);
-    }
+  test('MeiliSearchApiError can be compared with the instanceof operator', () => {
+    expect(
+      new MeiliSearchApiError(new Response(), {
+        message: 'Some error',
+        code: 'some_error',
+        type: 'random_error',
+        link: 'a link',
+      }) instanceof MeiliSearchApiError,
+    ).toEqual(true);
   });
 
-  test('MeiliSearchCommunicationError can be compared with the instanceof operator', async () => {
+  test('MeilisearchRequestError can be compared with the instanceof operator', async () => {
     fetchMock.mockReject(new Error('fake error message'));
     const client = new MeiliSearch({ host: 'http://localhost:9345' });
     try {
       await client.health();
     } catch (e: any) {
-      expect(e instanceof MeiliSearchCommunicationError).toEqual(true);
+      expect(e instanceof MeiliSearchRequestError).toEqual(true);
     }
   });
 
diff --git a/tests/facet_search.test.ts b/tests/facet_search.test.ts
index d925c5870..027dbde7f 100644
--- a/tests/facet_search.test.ts
+++ b/tests/facet_search.test.ts
@@ -95,6 +95,7 @@ describe.each([
     };
     const response = await client.index(index.uid).searchForFacetValues(params);
 
+    // @TODO: This is flaky, processingTimeMs is not guaranteed
     expect(response).toMatchSnapshot();
   });
 });
diff --git a/tests/faceting.test.ts b/tests/faceting.test.ts
index 840481131..5144659eb 100644
--- a/tests/faceting.test.ts
+++ b/tests/faceting.test.ts
@@ -101,21 +101,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getFaceting(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update faceting and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateFaceting({ maxValuesPerFacet: 13 }),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset faceting and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetFaceting(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -130,7 +130,7 @@ describe.each([{ permission: 'No' }])('Test on faceting', ({ permission }) => {
   test(`${permission} key: try to get faceting and be denied`, async () => {
     const client = await getClient(permission);
     await expect(client.index(index.uid).getFaceting()).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -140,7 +140,7 @@ describe.each([{ permission: 'No' }])('Test on faceting', ({ permission }) => {
     await expect(
       client.index(index.uid).updateFaceting({ maxValuesPerFacet: 13 }),
     ).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -150,7 +150,7 @@ describe.each([{ permission: 'No' }])('Test on faceting', ({ permission }) => {
     await expect(
       client.index(index.uid).resetFaceting(),
     ).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -167,10 +167,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(index.uid).getFaceting()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -182,10 +179,7 @@ describe.each([
       client.index(index.uid).updateFaceting({ maxValuesPerFacet: null }),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -197,10 +191,7 @@ describe.each([
       client.index(index.uid).resetFaceting(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/filterable_attributes.test.ts b/tests/filterable_attributes.test.ts
index f6cb11067..03b9df931 100644
--- a/tests/filterable_attributes.test.ts
+++ b/tests/filterable_attributes.test.ts
@@ -91,21 +91,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getFilterableAttributes(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update attributes for filtering and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateFilterableAttributes([]),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset attributes for filtering and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetFilterableAttributes(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -124,7 +124,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getFilterableAttributes(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -134,7 +134,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updateFilterableAttributes([]),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -144,7 +144,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetFilterableAttributes(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -164,10 +164,7 @@ describe.each([
       client.index(index.uid).getFilterableAttributes(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -179,10 +176,7 @@ describe.each([
       client.index(index.uid).updateFilterableAttributes([]),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -194,10 +188,7 @@ describe.each([
       client.index(index.uid).resetFilterableAttributes(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/get_search.test.ts b/tests/get_search.test.ts
index 209e557c8..4ac4ccd1d 100644
--- a/tests/get_search.test.ts
+++ b/tests/get_search.test.ts
@@ -96,7 +96,8 @@ describe.each([
 
     const response = await client.index(index.uid).searchGet('prince', {});
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('limit', 20);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -109,7 +110,8 @@ describe.each([
     const response = await client
       .index(index.uid)
       .searchGet('prince', { limit: 1 });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 1);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -122,7 +124,8 @@ describe.each([
     const response = await client
       .index(index.uid)
       .search('', { sort: ['id:asc'] });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     const hit = response.hits[0];
     expect(hit.id).toEqual(1);
   });
@@ -134,7 +137,8 @@ describe.each([
     });
     const hit = response.hits[0];
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('query', 'prince');
     expect(Object.keys(hit).join(',')).toEqual(
       Object.keys(dataset[1]).join(','),
@@ -166,7 +170,8 @@ describe.each([
     const response = await client
       .index(index.uid)
       .searchGet('prince', { limit: 1 });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 1);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -203,7 +208,8 @@ describe.each([
       cropLength: 5,
       showMatchesPosition: true,
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits[0]).toHaveProperty('_matchesPosition', {
       comment: [{ start: 22, length: 6 }],
       title: [{ start: 9, length: 6 }],
@@ -223,7 +229,8 @@ describe.each([
       showMatchesPosition: true,
     });
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 5);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -297,7 +304,8 @@ describe.each([
       filter: 'title = "Le Petit Prince"',
       showMatchesPosition: true,
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 5);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -326,7 +334,8 @@ describe.each([
       filter: 'title = "Le Petit Prince"',
       showMatchesPosition: true,
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 5);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -360,7 +369,8 @@ describe.each([
     expect(response).toHaveProperty('facetDistribution', {
       genre: { romance: 2 },
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits.length).toEqual(2);
   });
 
@@ -370,7 +380,8 @@ describe.each([
       filter: 'id < 0',
       facets: ['genre'],
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits.length).toEqual(0);
   });
 
@@ -379,7 +390,8 @@ describe.each([
     const response = await client.index(index.uid).searchGet('h', {
       filter: 'genre = "sci fi"',
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits.length).toEqual(1);
   });
 
@@ -392,7 +404,8 @@ describe.each([
     expect(response).toHaveProperty('facetDistribution', {
       genre: { romance: 2 },
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits.length).toEqual(2);
   });
 
@@ -569,7 +582,7 @@ describe.each([
     await masterClient.waitForTask(taskUid);
     await expect(
       client.index(index.uid).searchGet('prince'),
-    ).rejects.toHaveProperty('code', ErrorStatusCode.INDEX_NOT_FOUND);
+    ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INDEX_NOT_FOUND);
   });
 });
 
@@ -584,10 +597,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(index.uid).searchGet()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -597,10 +607,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(index.uid).searchGet()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/index.test.ts b/tests/index.test.ts
index 360b3dab0..954533d2b 100644
--- a/tests/index.test.ts
+++ b/tests/index.test.ts
@@ -88,7 +88,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
     test(`${permission} key: Get index that does not exist`, async () => {
       const client = await getClient(permission);
       await expect(client.getIndex('does_not_exist')).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INDEX_NOT_FOUND,
       );
     });
@@ -96,7 +96,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
     test(`${permission} key: Get raw index that does not exist`, async () => {
       const client = await getClient(permission);
       await expect(client.getRawIndex('does_not_exist')).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INDEX_NOT_FOUND,
       );
     });
@@ -331,7 +331,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
       const client = await getClient(permission);
       const index = client.index(indexNoPk.uid);
       await expect(index.getRawInfo()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INDEX_NOT_FOUND,
       );
     });
@@ -339,7 +339,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
     test(`${permission} key: get deleted raw index should fail through client`, async () => {
       const client = await getClient(permission);
       await expect(client.getRawIndex(indexNoPk.uid)).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INDEX_NOT_FOUND,
       );
     });
@@ -406,13 +406,13 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(indexNoPk.uid).getRawInfo(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to get raw index and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.getRawIndex(indexNoPk.uid)).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INVALID_API_KEY,
       );
     });
@@ -420,7 +420,7 @@ describe.each([{ permission: 'Search' }])(
     test(`${permission} key: try to delete index and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.index(indexPk.uid).delete()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INVALID_API_KEY,
       );
     });
@@ -429,13 +429,13 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(indexPk.uid).update({ primaryKey: indexPk.primaryKey }),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to get stats and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.index(indexPk.uid).getStats()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INVALID_API_KEY,
       );
     });
@@ -452,7 +452,7 @@ describe.each([{ permission: 'No' }])(
     test(`${permission} key: try to get all indexes and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.getIndexes()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -462,7 +462,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(indexNoPk.uid).getRawInfo(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -470,7 +470,7 @@ describe.each([{ permission: 'No' }])(
     test(`${permission} key: try to get raw index and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.getRawIndex(indexNoPk.uid)).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -478,7 +478,7 @@ describe.each([{ permission: 'No' }])(
     test(`${permission} key: try to delete index and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.index(indexPk.uid).delete()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -488,7 +488,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(indexPk.uid).update({ primaryKey: indexPk.primaryKey }),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -506,10 +506,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(indexPk.uid).getStats()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -519,14 +516,11 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(indexPk.uid).getRawInfo()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
     await expect(client.index(indexPk.uid).getRawInfo()).rejects.toHaveProperty(
       'name',
-      'MeiliSearchCommunicationError',
+      'MeiliSearchRequestError',
     );
   });
 
@@ -536,14 +530,11 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.getRawIndex(indexPk.uid)).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
     await expect(client.getRawIndex(indexPk.uid)).rejects.toHaveProperty(
       'name',
-      'MeiliSearchCommunicationError',
+      'MeiliSearchRequestError',
     );
   });
 
@@ -553,10 +544,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(indexPk.uid).getRawInfo()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -566,10 +554,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(indexPk.uid).getRawInfo()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/keys.test.ts b/tests/keys.test.ts
index 6dff736c3..ff171698d 100644
--- a/tests/keys.test.ts
+++ b/tests/keys.test.ts
@@ -209,7 +209,7 @@ describe.each([{ permission: 'Search' }])(
     test(`${permission} key: get keys denied`, async () => {
       const client = await getClient(permission);
       await expect(client.getKeys()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INVALID_API_KEY,
       );
     });
@@ -223,7 +223,7 @@ describe.each([{ permission: 'Search' }])(
           indexes: ['products'],
           expiresAt: null,
         }),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -234,7 +234,7 @@ describe.each([{ permission: 'No' }])(
     test(`${permission} key: get keys denied`, async () => {
       const client = await getClient(permission);
       await expect(client.getKeys()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -249,7 +249,7 @@ describe.each([{ permission: 'No' }])(
           expiresAt: null,
         }),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
diff --git a/tests/non_separator_tokens.test.ts b/tests/non_separator_tokens.test.ts
index f1dbfb719..6bf42ddb7 100644
--- a/tests/non_separator_tokens.test.ts
+++ b/tests/non_separator_tokens.test.ts
@@ -95,10 +95,7 @@ describe.each([
       client.index(index.uid).getNonSeparatorTokens(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -110,10 +107,7 @@ describe.each([
       client.index(index.uid).updateNonSeparatorTokens([]),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -125,10 +119,7 @@ describe.each([
       client.index(index.uid).resetNonSeparatorTokens(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/pagination.test.ts b/tests/pagination.test.ts
index 5153aa9a5..1f325edbd 100644
--- a/tests/pagination.test.ts
+++ b/tests/pagination.test.ts
@@ -97,21 +97,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getPagination(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update pagination and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updatePagination({ maxTotalHits: 10 }),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset pagination and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetPagination(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -130,7 +130,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getPagination(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -140,7 +140,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updatePagination({ maxTotalHits: 10 }),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -150,7 +150,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetPagination(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -170,10 +170,7 @@ describe.each([
       client.index(index.uid).getPagination(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -185,10 +182,7 @@ describe.each([
       client.index(index.uid).updatePagination({ maxTotalHits: null }),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -200,10 +194,7 @@ describe.each([
       client.index(index.uid).resetPagination(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/proximity_precision.test.ts b/tests/proximity_precision.test.ts
index 270cd879f..1c885d4ba 100644
--- a/tests/proximity_precision.test.ts
+++ b/tests/proximity_precision.test.ts
@@ -95,10 +95,7 @@ describe.each([
       client.index(index.uid).getProximityPrecision(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -110,10 +107,7 @@ describe.each([
       client.index(index.uid).updateProximityPrecision('byAttribute'),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -125,10 +119,7 @@ describe.each([
       client.index(index.uid).resetProximityPrecision(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/ranking_rules.test.ts b/tests/ranking_rules.test.ts
index 663a9ad37..4cca63554 100644
--- a/tests/ranking_rules.test.ts
+++ b/tests/ranking_rules.test.ts
@@ -102,21 +102,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getRankingRules(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update ranking rules and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateRankingRules([]),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset ranking rules and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetRankingRules(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -133,7 +133,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getRankingRules(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -143,7 +143,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updateRankingRules([]),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -153,7 +153,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetRankingRules(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -173,10 +173,7 @@ describe.each([
       client.index(index.uid).getRankingRules(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -188,10 +185,7 @@ describe.each([
       client.index(index.uid).updateRankingRules([]),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -203,10 +197,7 @@ describe.each([
       client.index(index.uid).resetRankingRules(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/search.test.ts b/tests/search.test.ts
index f4d9f1feb..57aca68e5 100644
--- a/tests/search.test.ts
+++ b/tests/search.test.ts
@@ -1,4 +1,3 @@
-import AbortController from 'abort-controller';
 import { ErrorStatusCode, MatchingStrategies } from '../src/types';
 import { EnqueuedTask } from '../src/enqueued-task';
 import {
@@ -148,7 +147,8 @@ describe.each([
     const client = await getClient(permission);
     const response = await client.index(index.uid).search('prince', {});
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('limit', 20);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -173,7 +173,8 @@ describe.each([
         matchingStrategy: MatchingStrategies.ALL,
       });
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 20);
     expect(response.hits.length).toEqual(1);
@@ -185,7 +186,8 @@ describe.each([
       .index(index.uid)
       .search('french book', { matchingStrategy: MatchingStrategies.LAST });
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 20);
     expect(response.hits.length).toEqual(2);
@@ -209,7 +211,8 @@ describe.each([
       .index(index.uid)
       .search('other', { q: 'prince' });
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('limit', 20);
     expect(response).toHaveProperty('offset', 0);
     expect(response.estimatedTotalHits).toBeDefined();
@@ -224,7 +227,8 @@ describe.each([
       .index(index.uid)
       .search(null, { q: 'prince' });
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('limit', 20);
     expect(response).toHaveProperty('offset', 0);
     expect(response.estimatedTotalHits).toBeDefined();
@@ -238,7 +242,8 @@ describe.each([
     const response = await client
       .index(index.uid)
       .search('"french book" about', {});
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('limit', 20);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -252,7 +257,8 @@ describe.each([
     const response = await client
       .index(index.uid)
       .search('prince', { limit: 1 });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 1);
     expect(response.estimatedTotalHits).toEqual(2);
@@ -266,7 +272,8 @@ describe.each([
     const response = await client
       .index(index.uid)
       .search('', { sort: ['id:asc'] });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     const hit = response.hits[0];
     expect(hit.id).toEqual(1);
   });
@@ -280,7 +287,8 @@ describe.each([
 
     const hit = response.hits[0];
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('query', 'prince');
     expect(hit).toHaveProperty('_rankingScore');
   });
@@ -294,7 +302,8 @@ describe.each([
 
     const hit = response.hits[0];
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('query', 'prince');
     expect(hit).toHaveProperty('_rankingScoreDetails');
     expect(Object.keys(hit._rankingScoreDetails || {})).toEqual([
@@ -337,7 +346,8 @@ describe.each([
     });
     const hit = response.hits[0];
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('query', 'prince');
     expect(Object.keys(hit).join(',')).toEqual(
       Object.keys(dataset[1]).join(','),
@@ -372,7 +382,8 @@ describe.each([
     });
     const hit = response.hits[0];
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('query', 'prince');
     expect(Object.keys(hit).join(',')).toEqual(
       Object.keys(dataset[1]).join(','),
@@ -384,7 +395,8 @@ describe.each([
     const response = await client
       .index(index.uid)
       .search('prince', { limit: 1 });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 1);
     expect(response.estimatedTotalHits).toEqual(2);
@@ -433,7 +445,8 @@ describe.each([
       cropLength: 5,
       showMatchesPosition: true,
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits[0]).toHaveProperty('_matchesPosition', {
       comment: [{ start: 22, length: 6 }],
       title: [{ start: 9, length: 6 }],
@@ -452,7 +465,8 @@ describe.each([
       filter: 'title = "Le Petit Prince"',
       showMatchesPosition: true,
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 5);
     expect(response.estimatedTotalHits).toEqual(1);
@@ -527,7 +541,8 @@ describe.each([
       filter: 'title = "Le Petit Prince"',
       showMatchesPosition: true,
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 5);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -556,7 +571,8 @@ describe.each([
       filter: 'title = "Le Petit Prince"',
       showMatchesPosition: true,
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response).toHaveProperty('offset', 0);
     expect(response).toHaveProperty('limit', 5);
     expect(response).toHaveProperty('processingTimeMs', expect.any(Number));
@@ -615,7 +631,8 @@ describe.each([
 
     expect(response.facetStats).toEqual({ id: { min: 2, max: 123 } });
     expect(response.facetStats?.['id']?.max).toBe(123);
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits.length).toEqual(2);
   });
 
@@ -624,7 +641,8 @@ describe.each([
     const response = await client.index(index.uid).search('a', {
       filter: 'id < 0',
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits.length).toEqual(0);
   });
 
@@ -634,7 +652,8 @@ describe.each([
       filter: ['genre = "sci fi"'],
     });
 
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits.length).toEqual(1);
   });
 
@@ -647,7 +666,8 @@ describe.each([
     expect(response).toHaveProperty('facetDistribution', {
       genre: { romance: 2 },
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits.length).toEqual(2);
   });
 
@@ -970,7 +990,7 @@ describe.each([
 
     await expect(
       client.index(index.uid).search('prince', {}),
-    ).rejects.toHaveProperty('code', ErrorStatusCode.INDEX_NOT_FOUND);
+    ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INDEX_NOT_FOUND);
   });
 });
 
@@ -988,7 +1008,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).search('prince'),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -996,7 +1016,7 @@ describe.each([{ permission: 'No' }])(
     test(`${permission} key: Try multi search and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.multiSearch({ queries: [] })).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -1105,7 +1125,10 @@ describe.each([
     controller.abort();
 
     searchPromise.catch((error: any) => {
-      expect(error).toHaveProperty('message', 'The user aborted a request.');
+      expect(error).toHaveProperty(
+        'cause.message',
+        'This operation was aborted',
+      );
     });
   });
 
@@ -1160,7 +1183,10 @@ describe.each([
     });
 
     searchBPromise.catch((error: any) => {
-      expect(error).toHaveProperty('message', 'The user aborted a request.');
+      expect(error).toHaveProperty(
+        'cause.message',
+        'This operation was aborted',
+      );
     });
   });
 
@@ -1174,8 +1200,8 @@ describe.each([
     try {
       await client.health();
     } catch (e: any) {
-      expect(e.message).toEqual('Error: Request Timed Out');
-      expect(e.name).toEqual('MeiliSearchCommunicationError');
+      expect(e.cause.message).toEqual('Error: Request Timed Out');
+      expect(e.name).toEqual('MeiliSearchRequestError');
     }
   });
 });
@@ -1191,10 +1217,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(index.uid).search()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -1204,10 +1227,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(index.uid).search()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/searchCutoffMs.ts b/tests/searchCutoffMs.ts
index 9b60101d7..a96a07085 100644
--- a/tests/searchCutoffMs.ts
+++ b/tests/searchCutoffMs.ts
@@ -70,7 +70,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
       await expect(
         client.index(index.uid).updateSearchCutoffMs(newSearchCutoffMs),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INVALID_SETTINGS_SEARCH_CUTOFF_MS,
       );
     });
@@ -105,21 +105,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getSearchCutoffMs(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update searchCutoffMs and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateSearchCutoffMs(100),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset searchCutoffMs and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetSearchCutoffMs(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -138,7 +138,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getSearchCutoffMs(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -148,7 +148,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updateSearchCutoffMs(100),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -158,7 +158,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetSearchCutoffMs(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -178,10 +178,7 @@ describe.each([
       client.index(index.uid).getSearchCutoffMs(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -193,10 +190,7 @@ describe.each([
       client.index(index.uid).updateSearchCutoffMs(null),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -208,10 +202,7 @@ describe.each([
       client.index(index.uid).resetSearchCutoffMs(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/searchable_attributes.test.ts b/tests/searchable_attributes.test.ts
index 4a8b1e013..82132d721 100644
--- a/tests/searchable_attributes.test.ts
+++ b/tests/searchable_attributes.test.ts
@@ -93,21 +93,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getSearchableAttributes(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update searchable attributes and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateSearchableAttributes([]),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset searchable attributes and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetSearchableAttributes(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -126,7 +126,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getSearchableAttributes(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -136,7 +136,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updateSearchableAttributes([]),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -146,7 +146,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetSearchableAttributes(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -166,10 +166,7 @@ describe.each([
       client.index(index.uid).getSearchableAttributes(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -181,10 +178,7 @@ describe.each([
       client.index(index.uid).updateSearchableAttributes([]),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -196,10 +190,7 @@ describe.each([
       client.index(index.uid).resetSearchableAttributes(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/separator_tokens.test.ts b/tests/separator_tokens.test.ts
index f7320fb60..e571b7012 100644
--- a/tests/separator_tokens.test.ts
+++ b/tests/separator_tokens.test.ts
@@ -95,10 +95,7 @@ describe.each([
       client.index(index.uid).getSeparatorTokens(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -110,10 +107,7 @@ describe.each([
       client.index(index.uid).updateSeparatorTokens([]),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -125,10 +119,7 @@ describe.each([
       client.index(index.uid).resetSeparatorTokens(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/settings.test.ts b/tests/settings.test.ts
index c68a1f0f4..9c77d74de 100644
--- a/tests/settings.test.ts
+++ b/tests/settings.test.ts
@@ -280,19 +280,19 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getSettings(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
     test(`${permission} key: try to update settings and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateSettings({}),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
     test(`${permission} key: try to reset settings and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetSettings(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -304,7 +304,7 @@ describe.each([{ permission: 'No' }])('Test on settings', ({ permission }) => {
   test(`${permission} key: try to get settings and be denied`, async () => {
     const client = await getClient(permission);
     await expect(client.index(index.uid).getSettings()).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -313,7 +313,7 @@ describe.each([{ permission: 'No' }])('Test on settings', ({ permission }) => {
     await expect(
       client.index(index.uid).updateSettings({}),
     ).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -322,7 +322,7 @@ describe.each([{ permission: 'No' }])('Test on settings', ({ permission }) => {
     await expect(
       client.index(index.uid).resetSettings(),
     ).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -339,10 +339,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(index.uid).getSettings()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -354,10 +351,7 @@ describe.each([
       client.index(index.uid).updateSettings({}),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -369,10 +363,7 @@ describe.each([
       client.index(index.uid).resetSettings(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/snapshots.test.ts b/tests/snapshots.test.ts
index f8763c37d..bf78c87d4 100644
--- a/tests/snapshots.test.ts
+++ b/tests/snapshots.test.ts
@@ -29,7 +29,7 @@ describe.each([{ permission: 'Search' }])(
     test(`${permission} key: try to create snapshot with search key and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.createSnapshot()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INVALID_API_KEY,
       );
     });
@@ -42,7 +42,7 @@ describe.each([{ permission: 'No' }])(
     test(`${permission} key: try to create snapshot with no key and be denied`, async () => {
       const client = await getClient(permission);
       await expect(client.createSnapshot()).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -61,10 +61,7 @@ describe.each([
 
     await expect(client.createSnapshot()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/sortable_attributes.test.ts b/tests/sortable_attributes.test.ts
index 6581bb5f5..a03069696 100644
--- a/tests/sortable_attributes.test.ts
+++ b/tests/sortable_attributes.test.ts
@@ -87,21 +87,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getSortableAttributes(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update sortable attributes and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateSortableAttributes([]),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset sortable attributes and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetSortableAttributes(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -120,7 +120,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getSortableAttributes(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -131,7 +131,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updateSortableAttributes(resetSortable),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -141,7 +141,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetSortableAttributes(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -161,10 +161,7 @@ describe.each([
       client.index(index.uid).getSortableAttributes(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -176,10 +173,7 @@ describe.each([
       client.index(index.uid).updateSortableAttributes([]),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -191,10 +185,7 @@ describe.each([
       client.index(index.uid).resetSortableAttributes(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/stop_words.test.ts b/tests/stop_words.test.ts
index bf66d25be..5632b2b4c 100644
--- a/tests/stop_words.test.ts
+++ b/tests/stop_words.test.ts
@@ -84,21 +84,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getStopWords(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update stop words and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateStopWords([]),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset stop words and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetStopWords(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -115,7 +115,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getStopWords(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -125,7 +125,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updateStopWords([]),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -135,7 +135,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetStopWords(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -153,10 +153,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(index.uid).getStopWords()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -168,10 +165,7 @@ describe.each([
       client.index(index.uid).updateStopWords([]),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -183,10 +177,7 @@ describe.each([
       client.index(index.uid).resetStopWords(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/synonyms.test.ts b/tests/synonyms.test.ts
index 95c184b06..bc1171d85 100644
--- a/tests/synonyms.test.ts
+++ b/tests/synonyms.test.ts
@@ -81,21 +81,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getSynonyms(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update synonyms and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateSynonyms({}),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset synonyms and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetSynonyms(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -108,7 +108,7 @@ describe.each([{ permission: 'No' }])('Test on synonyms', ({ permission }) => {
   test(`${permission} key: try to get synonyms and be denied`, async () => {
     const client = await getClient(permission);
     await expect(client.index(index.uid).getSynonyms()).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -118,7 +118,7 @@ describe.each([{ permission: 'No' }])('Test on synonyms', ({ permission }) => {
     await expect(
       client.index(index.uid).updateSynonyms({}),
     ).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -128,7 +128,7 @@ describe.each([{ permission: 'No' }])('Test on synonyms', ({ permission }) => {
     await expect(
       client.index(index.uid).resetSynonyms(),
     ).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -145,10 +145,7 @@ describe.each([
     const strippedHost = trailing ? host.slice(0, -1) : host;
     await expect(client.index(index.uid).getSynonyms()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -160,10 +157,7 @@ describe.each([
       client.index(index.uid).updateSynonyms({}),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -175,10 +169,7 @@ describe.each([
       client.index(index.uid).resetSynonyms(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/task.test.ts b/tests/task.test.ts
index 14099251c..89cf421ec 100644
--- a/tests/task.test.ts
+++ b/tests/task.test.ts
@@ -377,7 +377,10 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
       await expect(
         // @ts-expect-error testing wrong argument type
         client.getTasks({ types: ['wrong'] }),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_TASK_TYPES);
+      ).rejects.toHaveProperty(
+        'cause.code',
+        ErrorStatusCode.INVALID_TASK_TYPES,
+      );
     });
 
     // filters error code: INVALID_TASK_STATUSES_FILTER
@@ -387,7 +390,10 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
       await expect(
         // @ts-expect-error testing wrong argument type
         client.getTasks({ statuses: ['wrong'] }),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_TASK_STATUSES);
+      ).rejects.toHaveProperty(
+        'cause.code',
+        ErrorStatusCode.INVALID_TASK_STATUSES,
+      );
     });
 
     // filters error code: INVALID_TASK_UIDS_FILTER
@@ -397,7 +403,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
       await expect(
         // @ts-expect-error testing wrong argument type
         client.getTasks({ uids: ['wrong'] }),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_TASK_UIDS);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_TASK_UIDS);
     });
 
     // filters error code: INVALID_TASK_CANCELED_BY_FILTER
@@ -408,7 +414,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
         // @ts-expect-error testing wrong canceledBy type
         client.getTasks({ canceledBy: ['wrong'] }),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INVALID_TASK_CANCELED_BY,
       );
     });
@@ -421,7 +427,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
         // @ts-expect-error testing wrong date format
         client.getTasks({ beforeEnqueuedAt: 'wrong' }),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.INVALID_TASK_BEFORE_ENQUEUED_AT,
       );
     });
@@ -587,7 +593,10 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
       await expect(
         // @ts-expect-error testing wrong argument type
         client.cancelTasks(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.MISSING_TASK_FILTERS);
+      ).rejects.toHaveProperty(
+        'cause.code',
+        ErrorStatusCode.MISSING_TASK_FILTERS,
+      );
     });
 
     // delete: uid
@@ -605,7 +614,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
       expect(deleteTask.type).toEqual(TaskTypes.TASK_DELETION);
       expect(task.details?.deletedTasks).toBeDefined();
       await expect(client.getTask(addDocuments.taskUid)).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.TASK_NOT_FOUND,
       );
     });
@@ -624,7 +633,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
 
       expect(deleteTask.type).toEqual(TaskTypes.TASK_DELETION);
       await expect(client.getTask(addDocuments.taskUid)).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.TASK_NOT_FOUND,
       );
     });
@@ -769,7 +778,7 @@ describe.each([{ permission: 'Master' }, { permission: 'Admin' }])(
       const client = await getClient(permission);
 
       await expect(client.getTask(254500)).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.TASK_NOT_FOUND,
       );
     });
@@ -784,7 +793,7 @@ describe.each([{ permission: 'Search' }])('Test on tasks', ({ permission }) => {
   test(`${permission} key: Try to get a task and be denied`, async () => {
     const client = await getClient(permission);
     await expect(client.getTask(0)).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.INVALID_API_KEY,
     );
   });
@@ -798,7 +807,7 @@ describe.each([{ permission: 'No' }])('Test on tasks', ({ permission }) => {
   test(`${permission} key: Try to get an task and be denied`, async () => {
     const client = await getClient(permission);
     await expect(client.getTask(0)).rejects.toHaveProperty(
-      'code',
+      'cause.code',
       ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
     );
   });
@@ -816,10 +825,7 @@ describe.each([
 
     await expect(client.index(index.uid).getTask(1)).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -830,10 +836,7 @@ describe.each([
 
     await expect(client.index(index.uid).getTasks()).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/token.test.ts b/tests/token.test.ts
index 87d8d9b34..73ac88eea 100644
--- a/tests/token.test.ts
+++ b/tests/token.test.ts
@@ -222,7 +222,7 @@ describe.each([{ permission: 'Admin' }])(
       // search
       await expect(
         searchClient.index(UID).search('pride'),
-      ).rejects.toHaveProperty('code', 'invalid_api_key');
+      ).rejects.toHaveProperty('cause.code', 'invalid_api_key');
     });
 
     test(`${permission} key: Search in tenant token on index with no permissions `, async () => {
@@ -236,7 +236,7 @@ describe.each([{ permission: 'Admin' }])(
       // search
       await expect(
         searchClient.index(UID).search('pride'),
-      ).rejects.toHaveProperty('code', 'invalid_api_key');
+      ).rejects.toHaveProperty('cause.code', 'invalid_api_key');
     });
 
     test(`${permission} key: Creates tenant token with an expiration date in the past throws an error`, async () => {
diff --git a/tests/typed_search.test.ts b/tests/typed_search.test.ts
index 85c69bb98..64cc019bc 100644
--- a/tests/typed_search.test.ts
+++ b/tests/typed_search.test.ts
@@ -313,7 +313,8 @@ describe.each([
     const response = await client.index<Movie>(index.uid).search('h', {
       filter: ['genre="sci fi"'],
     });
-    expect(response).toHaveProperty('hits', expect.any(Array));
+    expect(response).toHaveProperty('hits');
+    expect(Array.isArray(response.hits)).toBe(true);
     expect(response.hits.length === 1).toBeTruthy();
   });
 
@@ -380,7 +381,7 @@ describe.each([
 
     await expect(
       client.index<Movie>(index.uid).search('prince'),
-    ).rejects.toHaveProperty('code', ErrorStatusCode.INDEX_NOT_FOUND);
+    ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INDEX_NOT_FOUND);
   });
 });
 
@@ -459,7 +460,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index<Movie>(index.uid).search('prince'),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -479,10 +480,7 @@ describe.each([
       client.index<Movie>(index.uid).search(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -494,10 +492,7 @@ describe.each([
       client.index<Movie>(index.uid).search(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/tests/typo_tolerance.test.ts b/tests/typo_tolerance.test.ts
index d8d917c0a..e559bb2df 100644
--- a/tests/typo_tolerance.test.ts
+++ b/tests/typo_tolerance.test.ts
@@ -98,21 +98,21 @@ describe.each([{ permission: 'Search' }])(
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).getTypoTolerance(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to update typo tolerance settings and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).updateTypoTolerance({}),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
 
     test(`${permission} key: try to reset typo tolerance settings and be denied`, async () => {
       const client = await getClient(permission);
       await expect(
         client.index(index.uid).resetTypoTolerance(),
-      ).rejects.toHaveProperty('code', ErrorStatusCode.INVALID_API_KEY);
+      ).rejects.toHaveProperty('cause.code', ErrorStatusCode.INVALID_API_KEY);
     });
   },
 );
@@ -129,7 +129,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).getTypoTolerance(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -139,7 +139,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).updateTypoTolerance({}),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -149,7 +149,7 @@ describe.each([{ permission: 'No' }])(
       await expect(
         client.index(index.uid).resetTypoTolerance(),
       ).rejects.toHaveProperty(
-        'code',
+        'cause.code',
         ErrorStatusCode.MISSING_AUTHORIZATION_HEADER,
       );
     });
@@ -169,10 +169,7 @@ describe.each([
       client.index(index.uid).getTypoTolerance(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -184,10 +181,7 @@ describe.each([
       client.index(index.uid).updateTypoTolerance({}),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 
@@ -199,10 +193,7 @@ describe.each([
       client.index(index.uid).resetTypoTolerance(),
     ).rejects.toHaveProperty(
       'message',
-      `request to ${strippedHost}/${route} failed, reason: connect ECONNREFUSED ${BAD_HOST.replace(
-        'http://',
-        '',
-      )}`,
+      `Request to ${strippedHost}/${route} has failed`,
     );
   });
 });
diff --git a/yarn.lock b/yarn.lock
index c149dbc13..e104911a2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2141,13 +2141,6 @@ abbrev@1:
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
   integrity sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
 
-abort-controller@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/abort-controller/-/abort-controller-3.0.0.tgz#eaf54d53b62bae4138e809ca225c8439a6efb392"
-  integrity sha512-h8lQ8tacZYnR3vNQTgibj+tODHI5/+l06Au2Pcriv/Gmet0eaj4TwWH41sO9wnHDiQsEj19q0drzdWdeAHtweg==
-  dependencies:
-    event-target-shim "^5.0.0"
-
 acorn-globals@^7.0.0:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-7.0.1.tgz#0dbf05c44fa7c94332914c02066d5beff62c40c3"
@@ -3185,11 +3178,6 @@ esutils@^2.0.2:
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.3.tgz#74d2eb4de0b8da1293711910d50775b9b710ef64"
   integrity sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==
 
-event-target-shim@^5.0.0:
-  version "5.0.1"
-  resolved "https://registry.yarnpkg.com/event-target-shim/-/event-target-shim-5.0.1.tgz#5d4d3ebdf9583d63a5333ce2deb7480ab2b05789"
-  integrity sha512-i/2XbnSz/uxRCU6+NdVJgKWDTM427+MqYbkQzD321DuCQJUqOuJKIA0IM2+W2xtYHdKOmZ4dR6fExsd4SXL+WQ==
-
 execa@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/execa/-/execa-5.0.0.tgz#4029b0007998a841fbd1032e5f4de86a3c1e3376"