xcode 8.3 Could not launch application process launch failed: unspecified

Question

I have new installed Xcode 8.3 with iOS 10.3.

My application ran on iOS as expected and suddenly Xcode fails to run application on device with error:

Could not launch "My app" process launch failed: unspecified

It runs on Simulators and on other device mini-pad (10.2)

Answer 1

I also have this problem when run in iOS 10.3.1 with xcode 8.3.2 Restart device, It will work well