Hi !
When I launch an iOS version of my app from XCode, I have this error coming up.
Terminating app due to uncaught exception ‘NSUnknownKeyException’, reason: ‘[<UIApplication 0x100201e20> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key view.’
The app just open and close immediately.
Help me please 
Thanks
The SO questions involving your error suggest that there is some sort of stale reference inside the project to something that has been removed, so I would try blowing away the XCode project and rebuilding it. Perhaps even going so far as to remove and then readd the ios platform.
This fixed my problem. I don’t know why it happened but thank you very much !