title: Message: Undefined property: Error in codeigniter
body: <p>I am using codeigntier rest api to generate token,and on my localhost it is working fine and after upload,it is not working.</p>
  
  <pre><code>public function __construct() {
      parent::__construct();
      $this-&gt;load-&gt;library('Authorization_Token');
  }
  </code></pre>
  
  <p>My controller function,I called like these:</p>
  
  <pre><code>$payload = ['id' =&gt; $uids];
  $token = $this-&gt;Authorization_Token-&gt;generateToken($payload);
  </code></pre>
  
  <p>The error I got from server.</p>
  
  <blockquote>
    <p>A PHP Error was encountered</p>
    
    <p>Severity: Notice<br>
    Message:  Undefined property: User_Api::$Authorization_Token<br>
    Filename: controllers/User_api.php<br>
    Line Number: 164  </p>
  </blockquote>
  
  <p>please help me how to solve it..
  note: the capital letters are correct. </p>