Fatal error: Uncaught Error: Class "Symfony\Component\Security\Http\Firewall\AbstractListener" not found in /home/marcgron/www/SSA/v2/vendor/symfony/security-http/Firewall/LogoutListener.php:32 Stack trace: #0 {main} thrown in /home/marcgron/www/SSA/v2/vendor/symfony/security-http/Firewall/LogoutListener.php on line 32