title: Laravel+FatalErrorException in Collection.php line 11: Interface 'Illuminate\Contracts\Queue\QueueableCollection' not found
body: <p>I have this code</p>
  
  <pre><code>use App\User;
  
  use Auth;
  
  use App\Http\Controllers\Controller;
  
  use App\Libraries\CustomLib;
  
  class UsersController extends Controller
  {
  
     public function postLogin(){
          // var_dump($_POST);
          $email = \Input::get('username');
          $password = \Input::get('password');
  
          $user = User::where("email",$email)-&gt;first();
          var_dump($user_info);
    }
  }
  </code></pre>
  
  <p>I am getting this error: </p>
  
  <pre><code>FatalErrorException in Collection.php line 11: Interface 'Illuminate\Contracts\Queue\QueueableCollection' not found
  </code></pre>
  
  <p>Not sure what that means.</p>
  
  <p>Any ideas please how to solve this. </p>
  
  <p>Thanks!</p>