Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Helper\Helper' not found in /home/edmedu/www/edmeducation.co.kr/tw-dev/vendor/symfony/console/Helper/DescriptorHelper.php:27 Stack trace: #0 {main} thrown in /home/edmedu/www/edmeducation.co.kr/tw-dev/vendor/symfony/console/Helper/DescriptorHelper.php on line 27