Asp.Net MVC化するJsonResultはIIS

Question

でエラー「ルート要素が欠落している」私はIIS ExpressでまたはWindows Azureの上でローカルにそれをテストした場合、私は取得するには、次化するJsonResult

public JsonResult GetCartSummary() 
    { 
     var cart = ShoppingCart.GetCart(HttpContext); 
     var results = new ShoppingCartSummaryViewModel 
     { 
      CartTotal = cart.GetTotal(), 
      CartCount = cart.GetCount() 
     }; 
     return Json(results, JsonRequestBehavior.AllowGet); 
    } 

とMVC 5 Webアプリケーションを持って投げます以下のような有効な応答：

{"CartTotal":0,"CartCount":0} 

しかし、私は、私たちの本番サーバーにアップロードするには（サーバー2012 R2上で実行されている8をIIS）その次の例外がスローされます。

Message: Root element is missing. 
StackTrace: at System.Xml.XmlTextReaderImpl.Throw(Exception e) 
at System.Xml.XmlTextReaderImpl.ParseDocumentContent() 
at System.Xml.Linq.XDocument.Load(XmlReader reader, LoadOptions options) 
at System.Xml.Linq.XDocument.Load(Stream stream, LoadOptions options) 
at System.Data.Entity.Migrations.Edm.ModelCompressor.Decompress(Byte[] bytes) 
at System.Data.Entity.Migrations.History.HistoryRepository.GetLastModel(String& migrationId, String& productVersion, String contextKey) 
at System.Data.Entity.Internal.InternalContext.QueryForModel(DatabaseExistenceState existenceState) 
at System.Data.Entity.Internal.ModelCompatibilityChecker.CompatibleWithModel(InternalContext internalContext, ModelHashCalculator modelHashCalculator, Boolean throwIfNoMetadata, DatabaseExistenceState existenceState) 
at System.Data.Entity.Internal.InternalContext.CompatibleWithModel(Boolean throwIfNoMetadata, DatabaseExistenceState existenceState) 
at System.Data.Entity.CreateDatabaseIfNotExists`1.InitializeDatabase(TContext context) 
at System.Data.Entity.Internal.InternalContext.PerformInitializationAction(Action action) 
at System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization() 
at System.Data.Entity.Internal.RetryAction`1.PerformAction(TInput input) 
at System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction(Action`1 action) 
at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) 
at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize() 
at System.Data.Entity.Internal.Linq.InternalSet`1.get_InternalContext() 
at System.Data.Entity.Infrastructure.DbQuery`1.System.Linq.IQueryable.get_Provider() 
at System.Linq.Queryable.Where[TSource](IQueryable`1 source, Expression`1 predicate) 
at PlayingPlayers.Models.ShoppingCart.GetTotal() 
at PlayingPlayers.Controllers.ShoppingCartController.GetCartSummary() 
at lambda_method(Closure , ControllerBase , Object[]) 
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) 
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) 
at System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) 
at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) 
at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) 
at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) 
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) 
at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) 
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() 
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) 
Source: System.Xml 
TargetSite: Void Throw(System.Exception) 

アップロードする必要のあるライブラリがないか、IIS8で設定が失われていますか？ありがとう

Answer 1

By Default Server 2012 R2は.netバージョン4.5.1を使用しています。

また、サーバーと互換性のない最新のEntity Frameworkを使用している可能性があります。最新の.NET Framework for Serverをインストールすることで問題が解決されることを願っています。 これを試してくださいhttps://www.microsoft.com/en-us/download/details.aspx?id=53344