这是Apple Watch上的权限问题。

This was a permissions issue on the Apple Watch.

修复：

1. 手动启动应用程序（不是通过Xcode中）。

1. Launch the app once manually (not through Xcode).

您将看到以下消息：

不受信任的App Developer

您是否相信开发人员......在Apple Watch上运行应用程序？

[Trust]

[请勿信任]

Untrusted App Developer
Do you trust the developer "..." to run apps on your Apple Watch?
[Trust]
[Don't Trust]