title: new Facebook SDK 4 throw exception about PHP_SESSION_ACTIVE in laravel
body: <p>I wanted implement the new facebook API v 4.0.0 on my project laravel.</p>
  
  <p>Setting all the necessary informations and credentials for access to my app, when is time to call the function for the login:</p>
  
  <pre><code>$helper = new FacebookRedirectLoginHelper('http://mywebsite.dev');
  $loginUrl = $helper-&gt;getLoginUrl();
  </code></pre>
  
  <p>It throw me an exception </p>
  
  <blockquote>
    <p>FacebookSDKException 'Session not active, could not store state.'</p>
  </blockquote>
  
  <p>So I dig in to the SDK class of facebook on that line and there is a check about session precisely this one:</p>
  
  <pre><code> if (session_status() !== PHP_SESSION_ACTIVE) {
        throw new FacebookSDKException(
          'Session not active, could not store state.'
        );
      }
  </code></pre>
  
  <p>Then I didn't know why this happen so i tried to put the same check on a clean route and see the result</p>
  
  <pre><code>Route::get('test',function() {
  
     if (session_status() !== PHP_SESSION_ACTIVE)
      {
          return "is not active";
      }
  
      return "is active";
  
  });
  </code></pre>
  
  <p>And it return <code>is not active</code> why this happen? in this way I cannot use the new facebook API with laravel?</p>