Fatal error: Uncaught Error: Interface 'Symfony\Component\Config\Definition\ConfigurationInterface' not found in /home/lafaamicps/www/symfony/vendor/knplabs/knp-menu-bundle/Knp/Bundle/MenuBundle/DependencyInjection/Configuration.php:13 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/knplabs/knp-menu-bundle/Knp/Bundle/MenuBundle/DependencyInjection/Configuration.php on line 13