diff --git a/Lexplorer/Pages/BlockDetails.razor b/Lexplorer/Pages/BlockDetails.razor
index 4699619..e125e7e 100644
--- a/Lexplorer/Pages/BlockDetails.razor
+++ b/Lexplorer/Pages/BlockDetails.razor
@@ -153,7 +153,7 @@
                 isTransactionLoading = true;
                 string transactionDatacacheKey = $"blockDetailTransactions-{blockId}-page{gotoPage}";
                 var transactionData = await AppCache.GetOrAddAsyncNonNull(transactionDatacacheKey,
-                    async () => await LoopringGraphQLService.GetTransactions((gotoPage - 1) * pageSize, pageSize, blockNumber, cancellationToken: localCTS.Token),
+                    async () => await LoopringGraphQLService.GetTransactions((gotoPage - 1) * pageSize, pageSize, blockId: blockNumber, cancellationToken: localCTS.Token),
                     DateTimeOffset.UtcNow.AddMinutes(5));
                 transactions = transactionData?.data?.transactions ?? new List<Transaction>();
                 isTransactionLoading = false;
diff --git a/Shared/Services/LoopringGraphQLService.cs b/Shared/Services/LoopringGraphQLService.cs
index 20ae7e7..dbb9573 100644
--- a/Shared/Services/LoopringGraphQLService.cs
+++ b/Shared/Services/LoopringGraphQLService.cs
@@ -307,7 +307,7 @@ query transactions(
                 $orderBy: Transaction_orderBy
                 $orderDirection: OrderDirection
                 $block: Block_height
-                $where: Transaction_filter
+                $whereFilter: Transaction_filter
               ) {
                 proxy(id: 0) {
                   transactionCount
@@ -334,7 +334,7 @@ query transactions(
                   orderBy: $orderBy
                   orderDirection: $orderDirection
                   block: $block
-                  where: $where
+                  where: $whereFilter
                 ) {
                   id
                   internalID
@@ -415,7 +415,7 @@ query transactions(
                         orderBy = "internalID",
                         orderDirection = "desc"
                         ,
-                        where = new
+                        whereFilter = new
                         {
                             block = blockId
                         }
@@ -432,9 +432,8 @@ query transactions(
                         skip = skip,
                         first = first,
                         orderBy = "internalID",
-                        orderDirection = "desc"
-                                       ,
-                        where = new
+                        orderDirection = "desc",
+                        whereFilter = new
                         {
                             typename = typeName
                         }
@@ -443,6 +442,11 @@ query transactions(
             }
             else
             {
+                //remove unused parameter to fix "Invalid query" error with non-hosted graph
+                //split and re-join all lines which don't contain the word "whereFilter"
+                transactionsQuery = String.Join(Environment.NewLine,
+                    transactionsQuery.Split(Environment.NewLine).Where(
+                        (a) => !(a.Contains("whereFilter"))));
                 request.AddJsonBody(new
                 {
                     query = transactionsQuery,
diff --git a/xUnitTests/LoopringGraphTests/TestTransaction.cs b/xUnitTests/LoopringGraphTests/TestTransaction.cs
index 07f790d..7fc943f 100644
--- a/xUnitTests/LoopringGraphTests/TestTransaction.cs
+++ b/xUnitTests/LoopringGraphTests/TestTransaction.cs
@@ -25,6 +25,32 @@ public async void TestGetTransaction()
             Assert.NotNull(transaction);
             Assert.Equal(testID, transaction!.id);
         }
+
+        [Theory]
+        [InlineData(null)]
+        [InlineData("Swap")]
+        public async void TestGetTransations(string? typeName)
+        {
+            var transactions = await service.GetTransactions(0, 5, typeName: typeName);
+            Assert.NotNull(transactions);
+            Assert.NotEmpty(transactions?.data?.transactions);
+            if (!String.IsNullOrEmpty(typeName))
+            {
+                foreach (var transaction in transactions?.data?.transactions!)
+                {
+                    Assert.Equal(typeName, transaction.typeName);
+                }
+            }
+        }
+
+        [Theory]
+        [InlineData("19527")]
+        public async void TestGetBlockTransations(string? blockId)
+        {
+            var transactions = await service.GetTransactions(0, 5, blockId: blockId);
+            Assert.NotNull(transactions);
+            Assert.NotEmpty(transactions?.data?.transactions);
+        }
     }
 }