Xcode/Flutter devices error: iPhone is busy: Preparing the watch for development via

Question

When running:

flutter devices

I get:

• Error: MyPhoneName’s iPhone is busy: Preparing the watch for development via MyPhoneName’s iPhone. Xcode will continue when MyPhoneName’s iPhone is
  finished. (code -10)

Is there some old log file or something, containing this error that I can delete?

I found this one, so maybe it is simply Apple that needs to do something.

Answer 1

I had the same situation. The error was due to "Developer Mode" not being turned on. When I went to the "Privacy & Security" section in "Settings" and turned on developer mode, my phone restarted and the problem was solved.

I hope it works for you.