Pri spracovaní nastala neočakávaná chyba

Chybu sa nepodarilo zapísať. Prosím upovedomte správcu systému. (detail)
Ďakujeme za pochopenie.

Chyba:Unable to cast object of type 'System.Threading.Tasks.Task`1[IntelsoftEast.Zverejnovanie.Models.Zmluva.IndexData]' to type 'System.Threading.Tasks.Task`1[IntelsoftEast.Zverejnovanie.Models.Dokument.DataModel]'.

System.InvalidCastException: Unable to cast object of type 'System.Threading.Tasks.Task`1[IntelsoftEast.Zverejnovanie.Models.Zmluva.IndexData]' to type 'System.Threading.Tasks.Task`1[IntelsoftEast.Zverejnovanie.Models.Dokument.DataModel]'. at CallSite.Target(Closure , CallSite , Object ) at IntelsoftEast.Core.Web.Generic.ApiControllerProvider`5.<IndexData>d__1.MoveNext() in D:\EAST\SOURCE\MVC\Core.Web\Generic\ApiControllerProvider.cs:line 57 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at IntelsoftEast.Core.Web.Generic.Controller`6.<>c__DisplayClass9_1.<<Index>b__0>d.MoveNext() in D:\EAST\SOURCE\MVC\Core.Web\Generic\Controller.cs:line 220 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter.GetResult() at IntelsoftEast.Core.Web.Controller.<Executor>d__32.MoveNext() in D:\EAST\SOURCE\MVC\Core.Web\Controller.cs:line 338 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter.GetResult() at IntelsoftEast.Core.Web.Generic.Controller`6.<Index>d__9.MoveNext() in D:\EAST\SOURCE\MVC\Core.Web\Generic\Controller.cs:line 194 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at IntelsoftEast.Zverejnovanie.Web.Controllers.ZmluvaController.<Index>d__3.MoveNext() in D:\EAST\SOURCE\MVC\Zverejnovanie.Web\Controllers\ZmluvaController.cs:line 50 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at IntelsoftEast.Core.Web.Generic.Controller`6.<Index>d__8.MoveNext() in D:\EAST\SOURCE\MVC\Core.Web\Generic\Controller.cs:line 174 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at IntelsoftEast.Zverejnovanie.Web.Controllers.ZmluvaController.<Index>d__2.MoveNext() in D:\EAST\SOURCE\MVC\Zverejnovanie.Web\Controllers\ZmluvaController.cs:line 43 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass8_0.<BeginInvokeAsynchronousActionMethod>b__1(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass11_0.<InvokeActionMethodFilterAsynchronouslyRecursive>b__0() at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass11_2.<InvokeActionMethodFilterAsynchronouslyRecursive>b__2() at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass11_2.<InvokeActionMethodFilterAsynchronouslyRecursive>b__2() at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass3_6.<BeginInvokeAction>b__4() at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass3_1.<BeginInvokeAction>b__1(IAsyncResult asyncResult)