Fatal error: Uncaught Error: Class 'Symfony\Component\Translation\Loader\FileLoader' not found in /home/edmedu/www/edmeducation.co.kr/tw-dev/vendor/symfony/translation/Loader/JsonFileLoader.php:21 Stack trace: #0 {main} thrown in /home/edmedu/www/edmeducation.co.kr/tw-dev/vendor/symfony/translation/Loader/JsonFileLoader.php on line 21