Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\ConfigurationInterface" not found in /home/marcgron/www/SSA/v2/vendor/twig/extra-bundle/DependencyInjection/Configuration.php:19 Stack trace: #0 {main} thrown in /home/marcgron/www/SSA/v2/vendor/twig/extra-bundle/DependencyInjection/Configuration.php on line 19