Fatal error: Uncaught Error: Class 'Symfony\Component\Mime\Part\AbstractMultipartPart' not found in /var/www/typo3/vendor/symfony/mime/Part/Multipart/FormDataPart.php:24
Stack trace:
#0 {main}
thrown in /var/www/typo3/vendor/symfony/mime/Part/Multipart/FormDataPart.php on line 24