Fatal error: Uncaught Error: Class 'Symfony\Component\Mailer\Transport\AbstractHttpTransport' not found in /home/edmedu/www/hana-edu.co.kr/renew/vendor/symfony/mailer/Transport/AbstractApiTransport.php:25 Stack trace: #0 {main} thrown in /home/edmedu/www/hana-edu.co.kr/renew/vendor/symfony/mailer/Transport/AbstractApiTransport.php on line 25