Fatal error: Uncaught Error: Interface "Symfony\Component\Security\Http\Firewall\FirewallListenerInterface" not found in /home/marcgron/www/SSA/v2/vendor/symfony/security-http/Firewall/AbstractListener.php:19 Stack trace: #0 {main} thrown in /home/marcgron/www/SSA/v2/vendor/symfony/security-http/Firewall/AbstractListener.php on line 19