Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Transport\Smtp\Stream\AbstractStream" not found in C:\xampp\htdocs\mflux\vendor\symfony\mailer\Transport\Smtp\Stream\ProcessStream.php:24 Stack trace: #0 {main} thrown in C:\xampp\htdocs\mflux\vendor\symfony\mailer\Transport\Smtp\Stream\ProcessStream.php on line 24