Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in /home/marcgron/www/SSA/v2/vendor/symfony/framework-bundle/DependencyInjection/FrameworkExtension.php:228 Stack trace: #0 {main} thrown in /home/marcgron/www/SSA/v2/vendor/symfony/framework-bundle/DependencyInjection/FrameworkExtension.php on line 228