Server Error in '/' Application.

The HTTP status code of the response was not expected (500).

Status: 500
Response:
{"Message":"An error has occurred.","ExceptionMessage":"Sequence contains no elements","ExceptionType":"System.InvalidOperationException","StackTrace":"   at System.Linq.Enumerable.Min[TSource](IEnumerable`1 source)\r\n   at SportsReference.Web.Schedule.Controllers.WebScheduleController.GetSingleTrainingTimeSchedule(Int32 trainingId, Int32 newServicesConditionId, Int32 sportId) in C:\\Repository\\sport\\Web.Schedule\\Controllers\\WebScheduleController.cs:line 1306\r\n   at lambda_method(Closure , Object , O

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: SportsReference.Web.NewPublicSportsovetnik.WebSchedule.ApiException: The HTTP status code of the response was not expected (500).

Status: 500
Response:
{"Message":"An error has occurred.","ExceptionMessage":"Sequence contains no elements","ExceptionType":"System.InvalidOperationException","StackTrace":"   at System.Linq.Enumerable.Min[TSource](IEnumerable`1 source)\r\n   at SportsReference.Web.Schedule.Controllers.WebScheduleController.GetSingleTrainingTimeSchedule(Int32 trainingId, Int32 newServicesConditionId, Int32 sportId) in C:\\Repository\\sport\\Web.Schedule\\Controllers\\WebScheduleController.cs:line 1306\r\n   at lambda_method(Closure , Object , O

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[ApiException: The HTTP status code of the response was not expected (500).

Status: 500
Response: 
{"Message":"An error has occurred.","ExceptionMessage":"Sequence contains no elements","ExceptionType":"System.InvalidOperationException","StackTrace":"   at System.Linq.Enumerable.Min[TSource](IEnumerable`1 source)\r\n   at SportsReference.Web.Schedule.Controllers.WebScheduleController.GetSingleTrainingTimeSchedule(Int32 trainingId, Int32 newServicesConditionId, Int32 sportId) in C:\\Repository\\sport\\Web.Schedule\\Controllers\\WebScheduleController.cs:line 1306\r\n   at lambda_method(Closure , Object , O]
   SportsReference.Web.NewPublicSportsovetnik.WebSchedule.<SingleTrainingsTimeScheduleAsync>d__45.MoveNext() +4878
   System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() +32
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +62
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +32
   SportsReference.Web.NewPublicSportsovetnik.Controllers.<SelfStudyAsync>d__162.MoveNext() +385
   System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() +32
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +62
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +32
   SportsReference.Web.NewPublicSportsovetnik.Controllers.<BuySelfStudy>d__3.MoveNext() +568
   System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() +32
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +62
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +32
   SportsReference.Web.NewPublicSportsovetnik.Controllers.<Buy>d__1.MoveNext() +1121
   System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() +32
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +62
   System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) +92
   System.Web.Mvc.Async.<>c__DisplayClass8_0.<BeginInvokeAsynchronousActionMethod>b__1(IAsyncResult asyncResult) +22
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__11_0() +72
   System.Web.Mvc.Async.<>c__DisplayClass11_1.<InvokeActionMethodFilterAsynchronouslyRecursive>b__2() +396
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.<>c__DisplayClass3_6.<BeginInvokeAction>b__3() +50
   System.Web.Mvc.Async.<>c__DisplayClass3_1.<BeginInvokeAction>b__5(IAsyncResult asyncResult) +188
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
   System.Web.Mvc.<>c.<BeginExecuteCore>b__152_1(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +52
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
   System.Web.Mvc.<>c.<BeginProcessRequest>b__20_1(IAsyncResult asyncResult, ProcessRequestState innerState) +43
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
   System.Web.CallHandlerExecutionStep.InvokeEndHandler(IAsyncResult ar) +231
   System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +172


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4110.0