Cannot run app on real Apple Watch
When this happened to me, I fixed the issue by:
- Making sure there are no problems with your Main.storyboard and it has an initial view controller.
- Deleted app on phone
- Rebooted phone
- Rebooted watch
- Quit xcode and rebooted mac
You could build the app to iPhone first, wait the watch app sync to watch. (Or you could sync it in companion by turn off and turn on the install switch manually)
Then keep the app running on watch, select Xcode->Debug->Attach to Process->XXXXX Extension(the name of your watch extension)
After a while you should be able to debug the watch app.