Проблема с модулем Cannot redeclare class JDocumentHTML in ... - Joomla 1.5: Общие вопросы

Fatal error: Cannot redeclare class JDocumentHTML in .../libraries/joomla/document/html/html.php on line 394

<?php
defined('_JEXEC') or die('Restricted access');

require_once (dirname(__FILE__).DS.'helper.php');
	
jimport('joomla.document.html.html');
$document =& JFactory::getDocument();
$link = JURI::root().'modules/mod_topnews/tmpl/css/style.css';
$attribs = array('type' => 'text/css');
$document->addHeadLink(JRoute::_($link), 'stylesheet', 'rel', $attribs);



$topnews = modTopNewsHelper::getTopNews();
require(JModuleHelper::getLayoutPath('mod_topnews'));
?>

<?php
// no direct access
defined('_JEXEC') or die('Restricted access');



class modTopNewsHelper
{
	function getTopNews()
	{
		//get database
		$db = JFactory::getDBO();

		$query = "SELECT * FROM #__content WHERE catid=35 ORDER BY created DESC LIMIT 3";
		$db->setQuery($query);
		$rows = $db->loadObjectList();
                return $rows;
		
	}

        
}
?>

<?php // no direct access
defined('_JEXEC') or die('Restricted access'); ?>
<div class="str_news">

        <?php if($topnews){
        foreach($topnews as $item): ?>
    <?php $realdate = date("d-m-Y",time($item->created))?>
            <span class="str_news_title"><a href="<?php echo 'index.php?option=com_content&view=article&id='.$item->id?>"><?php echo $item->title; ?></a> <span class="str_news_date"><?php echo $realdate ?></span> </span><br/>

            <?php endforeach; } ?>

    </div>

jimport('joomla.document.html.html');