Fatal error: Uncaught Error: Class "Symfony\Component\EventDispatcher\Event" not found in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony-cmf/routing/Event/RouterMatchEvent.php:17 Stack trace: #0 {main} thrown in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony-cmf/routing/Event/RouterMatchEvent.php on line 17