Fatal error: Uncaught Error: Interface "Symfony\Component\Security\Core\User\UserCheckerInterface" not found in /var/www/html/demo.ininli.ca/releases/18/src/Security/UserChecker.php:22 Stack trace: #0 {main} thrown in /var/www/html/demo.ininli.ca/releases/18/src/Security/UserChecker.php on line 22