Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Core\Exception\AuthenticationException' not found in /home/benjamincb/demos/acdg-site/vendor/symfony/security-core/Exception/InvalidCsrfTokenException.php:20 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/symfony/security-core/Exception/InvalidCsrfTokenException.php on line 20