Fatal error: Uncaught Error: Class 'Symfony\Component\Uid\Uuid' not found in /home/edmedu/www/hana-edu.co.kr/sf4l/vendor/symfony/uid/UuidV4.php:19 Stack trace: #0 {main} thrown in /home/edmedu/www/hana-edu.co.kr/sf4l/vendor/symfony/uid/UuidV4.php on line 19