Fatal error: Uncaught Error: Class "Symfony\Component\Security\Http\Logout\SessionLogoutHandler" not found in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/friendsofsymfony/http-cache-bundle/src/Security/Http/Logout/ContextInvalidationSessionLogoutHandler.php:20 Stack trace: #0 {main} thrown in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/friendsofsymfony/http-cache-bundle/src/Security/Http/Logout/ContextInvalidationSessionLogoutHandler.php on line 20