Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Part\TextPart" not found in /home/standardtelephon/public_html/apps/vendor/symfony/mime/Part/DataPart.php:20 Stack trace: #0 {main} thrown in /home/standardtelephon/public_html/apps/vendor/symfony/mime/Part/DataPart.php on line 20