Partner System Fehlermeldung

<?php
namespace wcf\page;


use wcf\system\category\CategoryHandler;
use wcf\system\WCF;


/**
 *
 * @author    Olaf Braun
 * @copyright 2013-2017 Olaf Braun - Software Development
 * @license   WBB-Elite.de License <https://lizenz.wbb-elite.de/lizenz.html>
 * @package   de.wbb-elite.partner
 * @category  Partner Page
 */
class PartnerPage extends AbstractPage {
	/**
	 * @see    \wcf\page\AbstractPage::$activeMenuItem
	 */
	public $activeMenuItem = 'wcf.header.menu.partner';
	/**
	 * @see    \wcf\page\AbstractPage::$neededModules
	 */
	public $neededModules = array('DE_WBB_ELITE_PARTNER_ON');
	/**
	 * @see    \wcf\page\AbstractPage::$neededPermissions
	 */
	public $neededPermissions = array('user.partner.canViewPartner', 'user.partner.canViewLinkUs');
	/**
	 * @see    \wcf\page\AbstractPage::assignVariables()
	 */
	public function assignVariables() {
		parent::assignVariables();
		$partnerArray = array();
		$partnerCategoryArray = array();
		$linkUs = array();
		$partners = CategoryHandler::getInstance()->getCategories('de.wbb-elite.partner');
        $linkusArray = CategoryHandler::getInstance()->getCategories('de.wbb-elite.linkUs');
		foreach ($partners as $partner) {
		    if(!$partner->isDisabled) {
                if ($partner->parentCategoryID == 0) {
                    $partnerCategoryArray[] = $partner;
                } else {
                    $partnerArray[$partner->parentCategoryID][] = $partner;
                }
            }
		}
		foreach($linkusArray as $linkus) {
		    if(!$linkus->isDisabled) {
		        $linkUs[] = $linkus;
            }
        }
		WCF::getTPL()->assign(array('linkUs' => $linkUs, 'partnerCategory' => $partnerCategoryArray, 'partner' => $partnerArray));
	}
}