Update json-transcoding.md

docs/i18n/ko/docusaurus-plugin-content-docs/current/integration/json-transcoding.md

@@ -28,6 +28,7 @@ builder.Services.AddMagicOnionJsonTranscodingSwagger();
 builder.Services.AddSwaggerGen(options =>
 {
     // Reflect the XML documentation comments of the service definition in Swagger.
+    // To use this feature, you must enable the Generate XML Comments option in project options.
     options.IncludeMagicOnionXmlComments(Path.Combine(AppContext.BaseDirectory, "JsonTranscodingSample.Shared.xml"));
 });
 
@@ -50,5 +51,22 @@ app.MapGet("/", () => "Communication with gRPC endpoints must be made through a
 
 app.Run();
 ```
-
 ![image](https://github.com/user-attachments/assets/a101cb00-c9ad-42b6-93d4-87c0d8d23773)
+
+
+
+## 트러블슈팅
+
+런타임에서, 아래와같은 Exception 발생시, `builder.Services.AddEndpointsApiExplorer();` 구문 추가가 도움이 될수있습니다.
+```csharp
+System.AggregateException: Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: Swashbuckle.AspNetCore.SwaggerGen.SwaggerGenerator Lifetime: Transient ImplementationType: Swashbuckle.AspNetCore.SwaggerGen.SwaggerGenerator': No constructor for type 'Swashbuckle.AspNetCore.SwaggerGen.SwaggerGenerator' can be instantiated using services from the service container and default values.)
+```
+
+
+참고  
+MagicOnion 에서 사용된 Swashbuckle.AspNetCore.Swagger 의 사용법이 기록된 MSDN 입니다.  
+https://learn.microsoft.com/ko-kr/aspnet/core/tutorials/getting-started-with-swashbuckle?view=aspnetcore-8.0&tabs=visual-studio
+
+```csharp
+builder.Services.AddEndpointsApiExplorer();
+```