How do you resolve ODATA returning an open bracket of array and 'StatusCode could not be set' error - sql

Question

I am working on a .NET ODATA API that exposes data from SQL Views and is consumed by a 'Salesforce Connect' Connector.
If I execute a query with an ODATA filter applied my query works fine but when I test some filters i get the following output:
Please note the 'open bracket response'. The response is 200 so I get an OK. But in my .NET logging I see the following error in my console:
fail: BARCO.ODataApi.Api.Web.AppExceptionHandlerMiddleware[0]
Request resulted in SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
System.Data.SqlClient.SqlException (0x80131904): Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
---> System.ComponentModel.Win32Exception (258): The wait operation timed out.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
at System.Data.SqlClient.SqlDataReader.get_MetaData()
at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite, String method)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.ExecuteReader()
at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReader(RelationalCommandParameterObject parameterObject)
at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.Enumerator.InitializeReader(Enumerator enumerator)
at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.Enumerator.<>c.<MoveNext>b__19_0(DbContext _, Enumerator enumerator)
at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.Enumerator.MoveNext()
at Microsoft.AspNetCore.OData.Formatter.Serialization.ODataResourceSetSerializer.WriteResourceSetAsync(IEnumerable enumerable, IEdmTypeReference resourceSetType, ODataWriter writer, ODataSerializerContext writeContext)
at Microsoft.AspNetCore.OData.Formatter.Serialization.ODataResourceSetSerializer.WriteObjectInlineAsync(Object graph, IEdmTypeReference expectedType, ODataWriter writer, ODataSerializerContext writeContext)
at Microsoft.AspNetCore.OData.Formatter.Serialization.ODataResourceSetSerializer.WriteObjectAsync(Object graph, Type type, ODataMessageWriter messageWriter, ODataSerializerContext writeContext)
at Microsoft.AspNetCore.OData.Formatter.ODataOutputFormatterHelper.WriteToStreamAsync(Type type, Object value, IEdmModel model, ODataVersion version, Uri baseAddress, MediaTypeHeaderValue contentType, HttpRequest request, IHeaderDictionary requestHeaders, IODataSerializerProvider serializerProvider)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeResultAsync>g__Logged|22_0(ResourceInvoker invoker, IActionResult result)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResultFilterAsync>g__Awaited|30_0[TFilter,TFilterAsync](ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultFilters()
--- End of stack trace from previous location ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker)
at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at BARCO.ODataApi.Api.Web.UnitOfWorkMiddleware.Invoke(HttpContext context) in C:\Github\BARCO\BarcoODataApi\BarcoODataApi\src\BARCO.ODataApi.Api\Web\UnitOfWorkMiddleWare.cs:line 46
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at BARCO.ODataApi.Api.Web.ClientConfigurationMiddleware.Invoke(HttpContext context) in C:\Github\BARCO\BarcoODataApi\BarcoODataApi\src\BARCO.ODataApi.Api\Web\ClientConfigurationMiddleware.cs:line 66
at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
at BARCO.ODataApi.Api.Web.AppExceptionHandlerMiddleware.Invoke(HttpContext context) in C:\Github\BARCO\BarcoODataApi\BarcoODataApi\src\BARCO.ODataApi.Api\Web\AppExceptionHandlerMiddleware.cs:line 37
ClientConnectionId:6b3c22ec-a535-4e66-99df-0cf41053a3f9
Error Number:-2,State:0,Class:11
fail: Microsoft.AspNetCore.Server.Kestrel[13]
Connection id "0HMFRFUHVRJMQ", Request id "0HMFRFUHVRJMQ:00000002": An unhandled exception was thrown by the application.
System.InvalidOperationException: StatusCode cannot be set because the response has already started.
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ThrowResponseAlreadyStartedException(String value)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.set_StatusCode(Int32 value)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.Microsoft.AspNetCore.Http.Features.IHttpResponseFeature.set_StatusCode(Int32 value)
at Microsoft.AspNetCore.Http.DefaultHttpResponse.set_StatusCode(Int32 value)
at BARCO.ODataApi.Api.Web.AppExceptionHandlerMiddleware.SetResponseExceptionStatusCode(HttpContext context, Exception exception) in C:\Github\BARCO\BarcoODataApi\BarcoODataApi\src\BARCO.ODataApi.Api\Web\AppExceptionHandlerMiddleware.cs:line 101
at BARCO.ODataApi.Api.Web.AppExceptionHandlerMiddleware.Invoke(HttpContext context) in C:\Github\BARCO\BarcoODataApi\BarcoODataApi\src\BARCO.ODataApi.Api\Web\AppExceptionHandlerMiddleware.cs:line 47
at Microsoft.AspNetCore.Watch.BrowserRefresh.BrowserRefreshMiddleware.InvokeAsync(HttpContext context)
at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication`1 application)
Is there a way to provide more detailed logging so I can understand what exactly is going wrong in my application or where the error is? Since receiving a response of "value":"[" is really weird and I have never seen this kind of response. I searched online already but there does not seem to be any questions out there with the same issue concerning this response.
One of my first questions i posted so please let me know if there is a need for additional information on my question.
Thanks in advance!
EDIT:
Salesforce Connect Backend Query translation:
SELECT TOP(#__TypedProperty_2) ...
FROM ... AS [v]
WHERE CASE
WHEN ( #__TypedProperty_0 LIKE N'' )
OR ( Charindex(#__TypedProperty_0, [v].[assetid]) > 0 ) THEN
Cast(1 AS BIT)
ELSE Cast(0 AS BIT)
END = #__TypedProperty_1
ORDER BY ...