Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in /home/marcgron/www/SSA/v2/vendor/twig/extra-bundle/DependencyInjection/TwigExtraExtension.php:45 Stack trace: #0 {main} thrown in /home/marcgron/www/SSA/v2/vendor/twig/extra-bundle/DependencyInjection/TwigExtraExtension.php on line 45