VS2019 vsix未安装

Question

在这里，我附上了我的错误日志，请有人对此提供帮助。

 1/30/2019 5:09:42 PM - Microsoft.VisualStudio.ExtensionManager.CorruptInstanceException: VSIX Installer has encountered a problem. To troubleshoot, follow the steps here: https://aka.ms/pc5ifb ---> Microsoft.VisualStudio.Setup.Dependencies.DependencyGraphConstructionException: The dependent package of 'Microsoft.VisualStudio.Product.Professional,version=15.9.28307.222' cannot be found: Component.8B84B9F8-7BCA-41C4-9235-EA560AA96519,version=16.4.0.49.
       at Microsoft.VisualStudio.Setup.Engine.Initialize()
       at Microsoft.VisualStudio.Setup.Engine.GetProducts()
       at Microsoft.VisualStudio.ExtensionManager.ExtensionEngineImpl.IntializePackages()
       at Microsoft.VisualStudio.ExtensionManager.ExtensionEngineImpl.GetPrerequisitesInternal(IInstallableExtension extension, ICollection`1 installedPackages, ICollection`1 installablePackages, ICollection`1 unresolvedReferences)
       at Microsoft.VisualStudio.ExtensionManager.ExtensionEngineImpl.GetPrerequisites(IInstallableExtension extension, IEnumerable`1& installedPackages, IEnumerable`1& installablePackages, IEnumerable`1& unresolvedReferences)
       at VSIXInstaller.ExtensionService.GetInstallableData(String vsixPath, String extensionPackParentName, Boolean isRepairSupported, IStateData stateData, IEnumerable`1& skuData)
    --- End of stack trace from previous location where exception was thrown ---
       at Microsoft.VisualStudio.Telemetry.WindowsErrorReporting.WatsonReport.GetClrWatsonExceptionInfo(Exception exceptionObject)
       --- End of inner exception stack trace ---
       at VSIXInstaller.ExtensionService.GetInstallableData(String vsixPath, String extensionPackParentName, Boolean isRepairSupported, IStateData stateData, IEnumerable`1& skuData)
       at VSIXInstaller.ExtensionPackService.IsExtensionPack(IStateData stateData, Boolean isRepairSupported)
       at VSIXInstaller.ExtensionPackService.ExpandExtensionPackToInstall(IStateData stateData, Boolean isRepairSupported)
       at VSIXInstaller.App.Initialize(Boolean isRepairSupported)
       at VSIXInstaller.App.Initialize()
       at System.Threading.Tasks.Task`1.InnerInvoke()
       at System.Threading.Tasks.Task.Execute()