Fatal error: Uncaught Error: Interface 'Silex\ServiceProviderInterface' not found in /home/lafaamicps/www/symfony/vendor/cocur/slugify/src/Bridge/Silex/SlugifyServiceProvider.php:27 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/cocur/slugify/src/Bridge/Silex/SlugifyServiceProvider.php on line 27