Не загружается конструктор XAML

в Microsoft.VisualStudio.DesignTools.HostUtility.Platform.AppContainerProcessDomai nFactory.CreateDesignerProcess(String applicationPath, String clientPort, Uri hostUri, IDictionary environmentVariables, Int32& processId, Object& processData)
в Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.Process DomainFactory.ProcessIsolationDomain..ctor(ProcessDomainFactory factory, IIsolationBoundary boundary, AppDomainSetup appDomainInfo, IIsolationTarget isolationTarget, String baseDirectory)
в Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.Process DomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)
в Microsoft.VisualStudio.DesignTools.HostUtility.Platform.AppContainerProcessDomai nFactory.CreateIsolationDomain(IIsolationBoundary boundary)
в Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.Isolati onBoundary.Initialize()
в Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.Isolati onBoundary.CreateInstance[T](Type type)
в Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedObjectFact ory.Initialize()
в Microsoft.VisualStudio.DesignTools.DesignerHost.Services.VSIsolationService.Crea teObjectFactory(IIsolationTarget isolationTarget, IObjectCatalog catalog)
в Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolationService.C reateLease(IIsolationTarget isolationTarget)
в Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolationService.C reateLease(IIsolationTarget isolationTarget)
в Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.Crea teLease(IIsolationTarget isolationTarget, CancellationToken cancelToken, DesignerServiceEntry& entry, IServiceProvider serviceOverrides)
в Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.Isol atedDesignerView.CreateDesignerViewInfo(CancellationToken cancelToken)
в Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskSchedu ler.InvokeWithCulture[T](CultureInfo culture, Func`2 func, CancellationToken cancelToken)
в Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskSchedu ler.<>c__DisplayClass10_0`1.<StartTask>b__0()
в System.Threading.Tasks.Task`1.InnerInvoke()
в System.Threading.Tasks.Task.Execute()