Fatal error: Uncaught Error: Class 'Symfony\Component\Routing\Exception\RuntimeException' not found in /home/edmedu/www/hana-edu.co.kr/sf4l/vendor/symfony/routing/Exception/RouteCircularReferenceException.php:14 Stack trace: #0 {main} thrown in /home/edmedu/www/hana-edu.co.kr/sf4l/vendor/symfony/routing/Exception/RouteCircularReferenceException.php on line 14