Terminating app due to uncaught exception 'NSInternalInconsistencyException'

Hi ,
I have replaced lclient in all places with proper change in Kclientid and redirect uri. example-IOS is reunning successful but after that this example is showing exception. Even though i have tried many times. do i need to get any licence to run this example ios project. if anyone knows please help me.

**Thanks in advance**

Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Update kClientID with your own client ID. Instructions: https://github.com/openid/AppAuth-iOS/blob/master/Example/README.md'