Fatal error: Uncaught Error: Interface 'Symfony\Component\Mailer\Transport\Smtp\Auth\AuthenticatorInterface' not found in /var/www/typo3/vendor/symfony/mailer/Transport/Smtp/Auth/PlainAuthenticator.php:21
Stack trace:
#0 {main}
thrown in /var/www/typo3/vendor/symfony/mailer/Transport/Smtp/Auth/PlainAuthenticator.php on line 21