Fatal error: Uncaught Error: Interface "Symfony\Component\Mime\Encoder\ContentEncoderInterface" not found in /home/kartulirest/public_html/xyz.kartulirest.de/vendor/symfony/mime/Encoder/QpContentEncoder.php:17 Stack trace: #0 {main} thrown in /home/kartulirest/public_html/xyz.kartulirest.de/vendor/symfony/mime/Encoder/QpContentEncoder.php on line 17