Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\ConfigurationInterface" not found in /var/www/html/gestion/vendor/symfony/framework-bundle/DependencyInjection/Configuration.php:56 Stack trace: #0 {main} thrown in /var/www/html/gestion/vendor/symfony/framework-bundle/DependencyInjection/Configuration.php on line 56