title: laravel cashier braintree BadMethodCallException
body: <p>I'm on laravel tinker.<br>
  Utilizador means User in English.<br>
  When I do <code>Utilizador::all()-&gt;last()-&gt;subscribed('main')</code> I get:</p>
  
  <blockquote>
    <p>BadMethodCallException with message 'Call to undefined method Illuminate\Database\Query\Builder::valid()'</p>
  </blockquote>
  
  <p>Don't know why.
  When I do <code>Utilizador::all()</code> I get all users and when I do <code>Subscription::all()</code> I get all subscriptions from the database. So my models seem to be working.<br>
  I also have a Utilizadores->subscription relationship and vice-versa</p>