Xamarin.iOS无法创建/打开情节提要

Question

我们在创建Xamarin.iOS中的故事板]时遇到问题。我们已与Mac配对，并且在VS GUI上显示已连接。当我们尝试创建（或在新项目中打开现有的故事板）时，我们得到相同的错误：

System.AggregateException: One or more errors occurred. ---> System.AggregateException: One or more errors occurred. ---> MonoTouch.Design.Client.InvalidSessionException: Error in the application.
   at MonoTouch.Design.Client.ServerProcessConnection.SendRequest(CommandRequest req, Boolean throwIfNotRunning) in E:\A\_work\79\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 235
   at MonoTouch.Design.Client.ServerProcessConnection.SendRequest[TResponse](CommandRequest req, Boolean throwIfNotRunning) in E:\A\_work\79\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 252
   at MonoTouch.Design.Client.ServerProcessConnection.CreateSession() in E:\A\_work\79\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 111
   at MonoTouch.Design.Client.ServerProcessConnection.<CreateSessionAsync>b__28_0() in E:\A\_work\79\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 116
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- 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 System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at System.Threading.Tasks.Task`1.get_Result()
   at MonoTouch.Design.Client.IPhoneDesignerSession.<>c__DisplayClass289_1`1.<EnsureSession>b__1(Task`1 t) in E:\A\_work\79\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\IPhoneDesignerSession.cs:line 2070
   at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at System.Threading.Tasks.Task.Wait()
   at MonoTouch.Design.Client.IPhoneDesignerSession.<>c__DisplayClass289_0`1.<EnsureSession>b__0() in E:\A\_work\79\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\IPhoneDesignerSession.cs:line 2136
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
[Truncated here]
Windows 10和Catalina上的VS版本都是最新版本（无法更新，Xcode是11.3版）>
我已经在线阅读了很多文章，说要更新并重新启动IDE，应该没问题，但是我什么也不能做...

有人知道如何解决这个问题吗？

我们在Xamarin.iOS中创建情节提要时遇到问题。我们已与Mac配对，并且在VS GUI上显示已连接。当我们尝试创建（或在新项目中打开现有的故事板）时，我们...

Answer 1

问题似乎在macOS版本中。我已经与一些使用不同类型软件（Flash Builder）的同事进行了交谈，他说他在Catalina macOS上也遇到了类似的问题。因此，我切换回Mojave

，更新为10.4.16