{"Message":"An error has occurred.","ExceptionMessage":"Object reference not set to an instance of an object.","ExceptionType":"System.NullReferenceException","StackTrace":" at Poe.Hypermedia.CreateUriForHypermediaControls.OnActionExecuted(HttpActionExecutedContext actionExecutedContext)\r\n at System.Web.Http.Tracing.ITraceWriterExtensions.TraceBeginEnd(ITraceWriter traceWriter, HttpRequestMessage request, String category, TraceLevel level, String operatorName, String operationName, Action`1 beginTrace, Action execute, Action`1 endTrace, Action`1 errorTrace)\r\n at System.Web.Http.Tracing.Tracers.ActionFilterAttributeTracer.OnActionExecuted(HttpActionExecutedContext actionExecutedContext)\r\n at System.Web.Http.Filters.ActionFilterAttribute.CallOnActionExecuted(HttpActionContext actionContext, HttpResponseMessage response, Exception exception)\r\n at System.Web.Http.Filters.ActionFilterAttribute.<>c__DisplayClass2.b__1(CatchInfo`1 info)\r\n at System.Threading.Tasks.TaskHelpersExtensions.<>c__DisplayClass4`1.b__3()\r\n at System.Threading.Tasks.TaskHelpersExtensions.CatchImpl[TResult](Task task, Func`1 continuation, CancellationToken cancellationToken)"}