Fatal error: Uncaught Error: Interface "Psr\Container\ContainerInterface" not found in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony/dependency-injection/ServiceLocator.php:22 Stack trace: #0 {main} thrown in /home/yrdsb11w3creativ/public_html/yrdsb/vendor/symfony/dependency-injection/ServiceLocator.php on line 22