Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/users/00/3c/21/home/www/vendor/friendsofsymfony/rest-bundle/DependencyInjection/FOSRestExtension.php:34 Stack trace: #0 {main} thrown in /home/users/00/3c/21/home/www/vendor/friendsofsymfony/rest-bundle/DependencyInjection/FOSRestExtension.php on line 34