Fatal error: Uncaught Error: Class "Symfony\Component\Security\Guard\AbstractGuardAuthenticator" not found in /home/creantis/840suite.creantis.dev/840suite01/core/backend/Security/LoginFormAuthenticator.php:50 Stack trace: #0 {main} thrown in /home/creantis/840suite.creantis.dev/840suite01/core/backend/Security/LoginFormAuthenticator.php on line 50