Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\ConfigurationInterface" not found in /var/www/bethesda/vendor/sensio/framework-extra-bundle/src/DependencyInjection/Configuration.php:23 Stack trace: #0 {main} thrown in /var/www/bethesda/vendor/sensio/framework-extra-bundle/src/DependencyInjection/Configuration.php on line 23