我正在尝试通过执行＜code＞flatterbuild ios＜/code＞来构建存档，但在启动Xcode构建＜/code>时遇到了一个问题

$ flutter build ios

Building com.example.example for the device (ios-release)...
Automatically signing iOS for device deployment using specified 
development team in Xcode project: XXXXXX
Running pod install...                                       
Starting Xcode build...
  ├─Building Dart code...     

我已经建立了一个存档（上周），它正在工作。也许这是由于颤振升级？

$ flutter doctor

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, v0.11.3, on Mac OS X 10.14.1 18B75, locale 
en-GB)
[✓] Android toolchain - develop for Android devices (Android SDK  
28.0.3)
[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
[✓] Android Studio (version 3.2)
[✓] VS Code (version 1.29.1)