Fatal error: Uncaught Error: Class 'Symfony\Component\Mailer\Transport\AbstractTransportFactory' not found in E:\xampp\htdocs\Ebinconf\vendor\symfony\mailer\Transport\SendmailTransportFactory.php:19 Stack trace: #0 {main} thrown in E:\xampp\htdocs\Ebinconf\vendor\symfony\mailer\Transport\SendmailTransportFactory.php on line 19