Call to undefined method Illuminate\Database\Query\Builder Laravel 5.4

Yesterday, I upgraded my biggest application to Laravel 5.4, which is still in Development. In my Frontend, I’m working a lot with Auth::user() and eloquent in my Models. Even if I have some Repositories.

For example I use Auth::user()->photo('size_256x256')->url but I'm getting an error.

Under 5.3 it has still worked. The part of the Model looks like return $this->hasOne(UsersPhoto::class, 'user_id', 'id')->where('size', $size)->first();

Do I have to change a lot now or do I haven’t read something at the change log? Maybe someone has a tipp what's the better way is now.

via Chebli Mohamed