Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Transport\AbstractHttpTransport" not found in /usr/www/unityweb/public/hms/vendor/symfony/mailer/Transport/AbstractApiTransport.php:26 Stack trace: #0 {main} thrown in /usr/www/unityweb/public/hms/vendor/symfony/mailer/Transport/AbstractApiTransport.php on line 26