Fatal error: Uncaught Error: Class "Frontend" not found in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/dklemmt/contao_dk_mmenu/system/modules/dk_mmenu/classes/Mmenu.php:30 Stack trace: #0 {main} thrown in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/dklemmt/contao_dk_mmenu/system/modules/dk_mmenu/classes/Mmenu.php on line 30