Fatal error: Uncaught Error: Interface 'Symfony\Component\Config\Definition\ConfigurationInterface' not found in /home/users/00/3c/21/home/www/vendor/jms/serializer-bundle/DependencyInjection/Configuration.php:11 Stack trace: #0 {main} thrown in /home/users/00/3c/21/home/www/vendor/jms/serializer-bundle/DependencyInjection/Configuration.php on line 11