Fatal error: Uncaught Error: Class "Symfony\Component\ErrorHandler\Exception\FlattenException" not found in /home/pataplou/www/patrick/masae/vendor/easycorp/easyadmin-bundle/src/Exception/FlattenException.php:11 Stack trace: #0 {main} thrown in /home/pataplou/www/patrick/masae/vendor/easycorp/easyadmin-bundle/src/Exception/FlattenException.php on line 11