Fatal error: Uncaught Error: Class "Symfony\Component\Routing\Loader\AttributeClassLoader" not found in /var/www/html/vendor/symfony/framework-bundle/Routing/AttributeRouteControllerLoader.php:24 Stack trace: #0 {main} thrown in /var/www/html/vendor/symfony/framework-bundle/Routing/AttributeRouteControllerLoader.php on line 24