Fatal error: Uncaught Error: Interface 'Symfony\Contracts\Service\ServiceSubscriberInterface' not found in /home/benjamincb/demos/acdg-site/vendor/symfony/framework-bundle/Controller/AbstractController.php:57 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/symfony/framework-bundle/Controller/AbstractController.php on line 57