System.NullReferenceException: Object reference not set to an instance of an object.

Publish: System.NullReferenceException: Object reference not set to an instance of an object.

System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.VisualStudio.Docker.DotNetCore.DockerWorkspaceService.GetCurrentTargetOSAsync(IVsHierarchy hierarchy)
at Microsoft.VisualStudio.Web.Azure.Publish.AppServiceContainerProfileVisualFactory.<>c__DisplayClass24_1.<IsApplicableTo>b__0()
at Microsoft.VisualStudio.Threading.JoinableTaskFactory.ExecuteJob[T](Func`1 asyncMethod, JoinableTask job)
— End of stack trace from previous location where exception was thrown —
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.VisualStudio.Threading.JoinableTask.CompleteOnCurrentThread()
at Microsoft.VisualStudio.Threading.JoinableTask`1.CompleteOnCurrentThread()
at Microsoft.VisualStudio.Threading.JoinableTaskFactory.Run[T](Func`1 asyncMethod, JoinableTaskCreationOptions creationOptions)
at Microsoft.VisualStudio.Web.Azure.Publish.AppServiceContainerProfileVisualFactory.IsApplicableTo(IVsHierarchy hierarchy, IReadOnlyList`1& tags)
at Microsoft.VisualStudio.ApplicationCapabilities.Publish.ViewModel.ProfileSelectorViewModel.LoadFactories(IPublishServiceProvider serviceProvider, IVsHierarchy hierarchy)
at Microsoft.VisualStudio.ApplicationCapabilities.Publish.ViewModel.ProfileSelectorViewModel..ctor(Dispatcher dispatcher, IAsyncServiceProvider vsServiceProvider, IPublishServiceProvider serviceProvider, IVsHierarchy hierarchy)
at Microsoft.VisualStudio.ApplicationCapabilities.Publish.Provider.DefaultPublishTabProvider.CreateViewAsync(IVsHierarchy project, IAsyncServiceProvider serviceProvider, CancellationToken cancellationToken)
at Microsoft.VisualStudio.ApplicationCapabilities.Publish.Provider.ManagedPublishProvider.<CreateViewAsync>d__1.MoveNext()

Çözüm:

  1. Bu hatanın çözümü için Solution içerisinden “Dockerfile” isimli dosyaya sağ tıklayarak “Excude From Project” deyin
  2. Sonra Projenin içerisindeki “Properties” dizini içerisindeki her şeyi silin. (Herhangi bir ataya karşı öncesinde bu klasörü rarlayıp yedeklemenizi öneririm)

Devamında solution’ınızı baştan çalıştırın ve hatadan kurtulmuş olacaksınız.

 

İyi çalışmalar dilerim…

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