title: Unable to load the requested class Session in Codeigniter
body: <p>My libraries in <code>autoload.php</code> is:</p>
  
  <pre><code>$autoload['libraries'] = 
       array('database','pagination','session','cart','form_validation');
  </code></pre>
  
  <p>I get this error:</p>
  
  <pre><code>An Error Was Encountered Unable to load the requested class: session
  </code></pre>
  
  <p>I'm using codeigniter version 3.0.</p>