Fatal error: Uncaught Error: Class "Symfony\Component\Routing\RouteCollection" not found in C:\Apache24\htdocs\cms_upgrade\vendor\symfony-cmf\routing\src\LazyRouteCollection.php:18
Stack trace:
#0 {main}
thrown in C:\Apache24\htdocs\cms_upgrade\vendor\symfony-cmf\routing\src\LazyRouteCollection.php on line 18