Fatal error: Uncaught Error: Interface 'Symfony\Cmf\Component\Routing\RouteProviderInterface' not found in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Routing/LegacyRouteProvider.php:21 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Routing/LegacyRouteProvider.php on line 21