Fatal error: Uncaught Error: Interface "Symfony\Component\Mailer\Transport\Smtp\Auth\AuthenticatorInterface" not found in D:\xampp\htdocs\dropifypro\vendor\symfony\mailer\Transport\Smtp\Auth\CramMd5Authenticator.php:21 Stack trace: #0 {main} thrown in D:\xampp\htdocs\dropifypro\vendor\symfony\mailer\Transport\Smtp\Auth\CramMd5Authenticator.php on line 21