Fatal error: Uncaught Error: Class 'Symfony\Component\Mime\Encoder\Base64Encoder' not found in /var/www/typo3/vendor/symfony/mime/Encoder/Base64ContentEncoder.php:19
Stack trace:
#0 {main}
thrown in /var/www/typo3/vendor/symfony/mime/Encoder/Base64ContentEncoder.php on line 19