Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Transport\AbstractTransportFactory" not found in /home/backend/public_html/fm360/system/vendor/symfony/mailer/Transport/SendmailTransportFactory.php:19 Stack trace: #0 {main} thrown in /home/backend/public_html/fm360/system/vendor/symfony/mailer/Transport/SendmailTransportFactory.php on line 19