Silent exception on folder URLs

[andresmoschini]

Stack trace:

2015-11-25 10:28:20,724 INFO Microsoft.AspNet.Loader.IIS - Received request: GET /docs/resources HTTP/1.1; Headers: { Connection: keep-alive; Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8; Accept-Encoding: gzip, deflate; Accept-Language: en-US,en;q=0.8,es-AR;q=0.5,es;q=0.3; Cookie: _ga=GA1.2.1625078559.1448391063; Host: restapi.fromdoppler.com; Referer: https://restapi.fromdoppler.com/docs/; User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:42.0) Gecko/20100101 Firefox/42.0; }
2015-11-25 10:28:20,724 INFO Microsoft.AspNet.Builder.RouterMiddleware - Request did not match any routes.
2015-11-25 10:28:20,724 INFO Microsoft.AspNet.Loader.IIS - Sending Response: HTTP/1.1 200 ; Headers: { Server: Microsoft-IIS/7.5; Content-Type: text/html; Last-Modified: Tue, 24 Nov 2015 18:31:17 GMT; Cache-Control: public, max-age=0; Content-Length: 7988; }
2015-11-25 10:28:20,724 ERROR Microsoft.AspNet.Loader.IIS - An error occurred while handling the request.
System.InvalidOperationException: The response has already been sent and cannot be modified.
   at Microsoft.AspNet.Loader.IIS.Infrastructure.HeliosHttpContext.Microsoft.AspNet.Loader.IIS.IHttpResponse.set_StatusCode(UInt16 value)
   at Microsoft.AspNet.Loader.IIS.FeatureModel.FeatureContext.Microsoft.AspNet.Http.Features.IHttpResponseFeature.set_StatusCode(Int32 value)
   at Microsoft.AspNet.Http.Internal.DefaultHttpResponse.set_StatusCode(Int32 value)
   at MakingSense.AspNet.HypermediaApi.ExceptionHandling.ProblemResult.<ExecuteResultAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at MakingSense.AspNet.HypermediaApi.ExceptionHandling.ApiErrorHandlerMiddleware.<ExecuteProblemResultAsync>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at MakingSense.AspNet.HypermediaApi.ExceptionHandling.ApiErrorHandlerMiddleware.<Invoke>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNet.Hosting.Internal.RequestServicesContainerMiddleware.<Invoke>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNet.Hosting.Internal.HostingEngine.<>c__DisplayClass29_0.<<Start>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNet.Loader.IIS.RuntimeHttpApplication.<ProcessRequestAsyncImpl>d__13.MoveNext()