Fatal error: Uncaught Error: Interface "Symfony\Component\Routing\Matcher\UrlMatcherInterface" not found in D:\Apache24\www\xy_gs1\backstage\vendor\symfony\routing\RouterInterface.php:24 Stack trace: #0 {main} thrown in D:\Apache24\www\xy_gs1\backstage\vendor\symfony\routing\RouterInterface.php on line 24