Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Csrf\CsrfTokenManager' not found in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Csrf/ContaoCsrfTokenManager.php:23 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Csrf/ContaoCsrfTokenManager.php on line 23