Xcode 9 Update Caused Code to Break

When I push a UIBarButton in my app the app breaks at:


class AppDelegate: UIResponder, UIApplicationDelegate {

with the error saying:

2017-10-07 18:22:12.033188-0400 App Name[3285:927126] -[ tableView:numberOfRowsInSection:]: unrecognized selector sent to instance 0x131e5df80

2017-10-07 18:22:12.034135-0400 App Name[3285:927126] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[tableView:numberOfRowsInSection:]: unrecognized selector sent to instance 0x131e5df80'


Before I took the Xcode 9 update everything was working fine. Does anyone know what could be causing this code to break?

Xcode 9 Update Caused Code to Break
 
 
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