Fatal error: Uncaught Error: Class 'Symfony\Component\Routing\RouteCollection' not found in /home/benjamincb/demos/acdg-site/vendor/symfony-cmf/routing/src/ChainRouteCollection.php:18 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/symfony-cmf/routing/src/ChainRouteCollection.php on line 18