Error on call to undefined method App\User::getNameOrUsername

For some days now have been getting that error message which I can't even go back to my home page of my display. Some other errors I can I see is

Illuminate\Database\Eloquent\Model::throwBadMethodCallException

Please I need your help here.

I use laravel and xampp

from Newest questions tagged laravel-5 - Stack Overflow https://ift.tt/2ofssUd
via IFTTT