Same issue here ... been driving me nuts for days. I just quit Xcode and retry. Also reboot watch and phone but most consistent is to just quit Xcode and try again. Sometimes works mostly does not. Also helps if you make some arbitrary change to the scheme and try again.
Will try nickredding's solution but this is seriously frustrating.
time passes ... (no its not the Hobbit -)
Yeeeeee - thanks Nick - works for me too.
Topic:
Developer Tools & Services
SubTopic:
Xcode
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