Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Encoder\Base64Encoder" not found in /home/kartulirest/public_html/xyz.kartulirest.de/vendor/symfony/mime/Encoder/Base64ContentEncoder.php:19 Stack trace: #0 {main} thrown in /home/kartulirest/public_html/xyz.kartulirest.de/vendor/symfony/mime/Encoder/Base64ContentEncoder.php on line 19