Problems
All problems will update here. Please try find your problems before contact us
Make sure you have same error message and platform
iOS only
An error occurred while running subprocess cordova
Failed to install 'onesignal-cordova-plugin': Error: pod: Command failed with exit code 31

Reason: your Mac don't have Cocoapods or need update Cocoapods
Solution:
Run
pod repo updateIf you get error
pod: command not foundthen you need install Cocoapods firstRemove iOS platform and add again
ionic cordova platform rm iosionic cordova platform add ios