Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Definition" not found in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony/dependency-injection/ChildDefinition.php:23 Stack trace: #0 {main} thrown in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony/dependency-injection/ChildDefinition.php on line 23