Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\RedirectResponse" not found in /home/qcsvlel/www/core/lib/Drupal/Component/HttpFoundation/SecuredRedirectResponse.php:16 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/lib/Drupal/Component/HttpFoundation/SecuredRedirectResponse.php on line 16