App crash

[antonio15020]

days ago I'm looking for solution to this problem but not what it is, can someone help?


*Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x150b50> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key lightButton.'

[BrianSlick]

You are trying to do something called lightButton against a plain UIViewController. Plain view controllers don't have a lightButton.

This is probably an issue with your XIB file. You probably need to specify your custom view controller class.

[antonio15020]

I have to review the appdelegate or ViewController?

[BrianSlick]

Not sure. Maybe both.

[antonio15020]

Ok, thank you

[baja_yu]

I usually got such errors when I deleted an IBOutlet in code, and left the actual item in the XIB with a now invalid connection.