Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Transport\AbstractTransport" not found in C:\xampp\htdocs\uslwmcbil_api\app\Mail\CustomSmtpTransport.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\uslwmcbil_api\app\Mail\CustomSmtpTransport.php on line 12