Fatal error: Uncaught Error: Class 'Symfony\Component\Mailer\Transport\Smtp\Stream\AbstractStream' not found in /var/www/typo3/vendor/symfony/mailer/Transport/Smtp/Stream/ProcessStream.php:24
Stack trace:
#0 {main}
thrown in /var/www/typo3/vendor/symfony/mailer/Transport/Smtp/Stream/ProcessStream.php on line 24