Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Core\User\UserChecker' not found in /home/cgenial/sandbox.cgenial.org/var/cache/prod/ContainerR50tdjz/getSecurity_UserCheckerService.php:8 Stack trace: #0 {main} thrown in /home/cgenial/sandbox.cgenial.org/var/cache/prod/ContainerR50tdjz/getSecurity_UserCheckerService.php on line 8