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![ivan akulov](https://secure.gravatar.com/avatar/aba684e2d3c756f6d2b98b286ee80f96?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
ivan akulov
4,174 PointsNSLog(@"Current user: %@", currentUser.username); it was fine. So i complete exercise and got an error.
Ribbit[24037:60b] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<inboxViewController 0x9ab71a0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key logout.'
Watched 3 times video and still don't see any difference. In stackoverflow the same problem with the second name of viewcontroller..can someone give a hint to me?
2 Answers
![Stone Preston](https://secure.gravatar.com/avatar/c2b2872f48c222732218df9be85e1ed2?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Stone Preston
42,016 Pointsis logout a button? try looking at the connections inspector for your view controller (its on the same bar as attributes inspector, size inspector etc) and see if you have a warning sign on any of your connections. if you do, delete it by clicking the x on the right of the connection. You probably added an ib action and then renamed it without properly removing the old connection first.
![ivan akulov](https://secure.gravatar.com/avatar/aba684e2d3c756f6d2b98b286ee80f96?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
ivan akulov
4,174 PointsYes! I found. First time I bound button "logout" I did IBOutlet but deleted and made IBAction. So I had two connections but 0 warning signs! Thank you!