Fatal error: Uncaught Error: Class 'Symfony\Component\Mailer\Transport\AbstractTransport' not found in C:\xampp\htdocs\ApiSigestWin\vendor\symfony\mailer\Transport\SendmailTransport.php:33 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\vendor\symfony\mailer\Transport\SendmailTransport.php on line 33