clang: error: clang frontend command failed with exit code 70 (use -v to see invocation)

Question

I don\'t know what causes it.

It does not happen at iPhone 5 and simulators. It have been happened only my original device iPhone 7.

fatal error: err         


        

Answer 1

This has been driving me nuts and I still can not pinpoint the reason for the crash. But a few of these steps or a combination of these seems to remedy it in the meanwhile.

• Try doing a clean build.
• Run pod install / pod deintegrate.
• Run npm install if you are working on a react native app after deleting node_modules
• Close xcode and then delete ~/Library/Developer/Xcode/DerivedData
• If nothing works try restarting the system.