Mon site joomla ne s"affiche pas

<?php
/**


* @package AcyMailing for Joomla!

* @version 4.6.2

* @author acyba.com

* @copyright (C) 2009-2014 ACYBA S.A.R.L. All rights reserved.

* @license GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html

*/
defined('_JEXEC') or die('Restricted access');
?><?php
class plgSystemAcymailingClassMail extends JPlugin {
 public function __construct(&$subject, $config = array()) {
  $file = rtrim(JPATH_SITE,DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR.'components'.DIRECTORY_SEPARATOR.'com_acymailing'.DIRECTORY_SEPARATOR.'inc'.DIRECTORY_SEPARATOR.'joomlanotification'.DIRECTORY_SEPARATOR.'mail.php';
     try{ 
   (include_path.usr/lib/php/usr/local/lib/php)
   require_once($file);
  }catch(Exception $e) 
    echo "Could not load Acymailing JMail class at $file,<br/>please disable the acymailingclassmail plugin";
   }
  parent::__construct($subject, $config);
 }
}