System.InvalidOperationException
Nullable object must have a value.
Description: HTTP 500.Error processing request.
Details: Non-web exception. Exception origin (name of application or object): mscorlib.
Exception stack trace:
at System.Nullable`1[T].get_Value () [0x00008] in <285579f54af44a2ca048dad6be20e190>:0
at DriftStats.Azure.Controllers.DriverController.GetQualifying (DriftStats.Azure.Models.DriverModel driver, DriftStats.Data.series series, System.Nullable`1[T] year) [0x0019e] in <f6c565fa8bee488cb194d17ed24ed83f>:0
at DriftStats.Azure.Controllers.DriverController.View (System.String driver, System.String series, System.String year, System.Nullable`1[T] category) [0x00b8c] in <f6c565fa8bee488cb194d17ed24ed83f>:0
at (wrapper dynamic-method) System.Object.lambda_method(System.Runtime.CompilerServices.Closure,System.Web.Mvc.ControllerBase,object[])
at System.Web.Mvc.ActionMethodDispatcher.Execute (System.Web.Mvc.ControllerBase controller, System.Object[] parameters) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.ReflectedActionDescriptor.Execute (System.Web.Mvc.ControllerContext controllerContext, System.Collections.Generic.IDictionary`2[TKey,TValue] parameters) [0x00079] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod (System.Web.Mvc.ControllerContext controllerContext, System.Web.Mvc.ActionDescriptor actionDescriptor, System.Collections.Generic.IDictionary`2[TKey,TValue] parameters) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeSynchronousActionMethod (System.Web.Mvc.ControllerContext controllerContext, System.Web.Mvc.ActionDescriptor actionDescriptor, System.Collections.Generic.IDictionary`2[TKey,TValue] parameters) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass42.<BeginInvokeSynchronousActionMethod>b__41 () [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper+<>c__DisplayClass8`1[TResult].<BeginSynchronous>b__7 (System.IAsyncResult _) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResult`1[TResult].End () [0x00029] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass37+<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33 () [0x0001e] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49 () [0x00086] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36 (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResult`1[TResult].End () [0x00029] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass25+<>c__DisplayClass2a.<BeginInvokeAction>b__20 () [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass25.<BeginInvokeAction>b__22 (System.IAsyncResult asyncResult) [0x00041] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResult`1[TResult].End () [0x00029] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Controller+<>c__DisplayClass1d.<BeginExecuteCore>b__18 (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper+<>c__DisplayClass4.<MakeVoidDelegate>b__3 (System.IAsyncResult ar) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at (wrapper delegate-invoke) System.Web.Mvc.Async.EndInvokeDelegate`1[System.Web.Mvc.Async.AsyncVoid].invoke_TResult_IAsyncResult(System.IAsyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResult`1[TResult].End () [0x00029] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper.End (System.IAsyncResult asyncResult, System.Object tag) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Controller.EndExecuteCore (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper+<>c__DisplayClass4.<MakeVoidDelegate>b__3 (System.IAsyncResult ar) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at (wrapper delegate-invoke) System.Web.Mvc.Async.EndInvokeDelegate`1[System.Web.Mvc.Async.AsyncVoid].invoke_TResult_IAsyncResult(System.IAsyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResult`1[TResult].End () [0x00029] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper.End (System.IAsyncResult asyncResult, System.Object tag) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Controller.EndExecute (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.MvcHandler+<>c__DisplayClass8.<BeginProcessRequest>b__3 (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper+<>c__DisplayClass4.<MakeVoidDelegate>b__3 (System.IAsyncResult ar) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at (wrapper delegate-invoke) System.Web.Mvc.Async.EndInvokeDelegate`1[System.Web.Mvc.Async.AsyncVoid].invoke_TResult_IAsyncResult(System.IAsyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper+WrappedAsyncResult`1[TResult].End () [0x00029] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult] (System.IAsyncResult asyncResult, System.Object tag) [0x00007] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.Async.AsyncResultWrapper.End (System.IAsyncResult asyncResult, System.Object tag) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.MvcHandler.EndProcessRequest (System.IAsyncResult asyncResult) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest (System.IAsyncResult result) [0x00000] in <e4c4ae87a2804756bc5d464ec68e0752>:0
at System.Web.HttpApplication.async_handler_complete_cb (System.IAsyncResult ar) [0x00015] in <3d585f08614544df8ad95b7d5ce5ea02>:0