Fatal error: Uncaught Error: Interface "Symfony\Cmf\Component\Routing\ChainRouterInterface" not found in C:\Apache24\htdocs\cms_upgrade\vendor\symfony-cmf\routing\src\ChainRouter.php:33
Stack trace:
#0 {main}
thrown in C:\Apache24\htdocs\cms_upgrade\vendor\symfony-cmf\routing\src\ChainRouter.php on line 33