title: ErrorBag is always empty in Laravel 5.2
body: <p>I was creating a new Laravel project and when debugging the errors of a form request, I noticed that my ErrorBag was always empty. Even when in the controller <code>$validator-&gt;fails()</code> returned <code>true</code>. I tried every solution I found on the internet but nothing worked.</p>
  
  <p>Even when creating a fresh project with composer (as described <a href="https://laravel.com/docs/5.2#installing-laravel" rel="nofollow">here</a>) my out of the box auth system has an empty error bag when leaving all the field empty.</p>
  
  <p>And yes, all the routes are using the middleware group web.</p>
  
  <p>Any ideas what is causing this problem? (Session::put() and Session::get() are working)</p>