Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\Loader" not found in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/contao/core-bundle/src/Config/Loader/XliffFileLoader.php:21 Stack trace: #0 {main} thrown in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/contao/core-bundle/src/Config/Loader/XliffFileLoader.php on line 21