Fatal error: Uncaught Error: Class "Symfony\Component\Console\Command\Command" not found in D:\Apache24\www\sciegen\backend\vendor\symfony\mailer\Command\MailerTestCommand.php:27 Stack trace: #0 {main} thrown in D:\Apache24\www\sciegen\backend\vendor\symfony\mailer\Command\MailerTestCommand.php on line 27