Fatal error: Uncaught Error: Class "Symfony\Bundle\FrameworkBundle\Controller\Controller" not found in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/contao/core-bundle/src/Controller/BackendController.php:40 Stack trace: #0 {main} thrown in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/contao/core-bundle/src/Controller/BackendController.php on line 40