Fatal error: Uncaught Error: Class 'Symfony\Component\Notifier\Transport\AbstractTransportFactory' not found in C:\xampp\htdocs\ApiSigestWin\vendor\symfony\notifier\Transport\NullTransportFactory.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\vendor\symfony\notifier\Transport\NullTransportFactory.php on line 21