Fatal error: Uncaught Error: Interface 'Silex\ServiceProviderInterface' not found in /home/lafaamicps/www/symfony/vendor/knplabs/knp-menu/src/Knp/Menu/Integration/Silex/KnpMenuServiceProvider.php:17 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/knplabs/knp-menu/src/Knp/Menu/Integration/Silex/KnpMenuServiceProvider.php on line 17