title: ERROR 403 Forbidden. This action is unauthorized
body: <p>I installed <a href="https://github.com/Laravel-Backpack/Demo" rel="nofollow noreferrer">https://github.com/Laravel-Backpack/Demo</a></p>
  
  <p>The CRUD seems to work for all the models apart from the User, Roles and permissions.</p>
  
  <p>Any time i try to edit or add a new user, role or permission I get taken to a "ERROR 403 Forbidden. This action is unauthorized." page.</p>
  
  <p>I did a bit of searching through the code and have found the authorize method is whats causing it. For example in PermissionCrudRequest the method \Auth::check(); returns false. I'm not sure why this is exactly.</p>
  
  <p>Laravel 5.6.39
  Using PHP 7.2.1
  MySql 5.7.23</p>
  
  <p>Any idea why I'm getting this issue?</p>
  
  <p>Thanks</p>