Fatal error: Uncaught Error: Class "Symfony\Component\Routing\RouteCollection" not found in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony-cmf/routing/ChainRouteCollection.php:18 Stack trace: #0 {main} thrown in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony-cmf/routing/ChainRouteCollection.php on line 18