Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Part\AbstractMultipartPart" not found in /users/quirl/www/filemanager/spark/protected/runtime/updater/backups/vendor_1719561010/symfony/mime/Part/Multipart/AlternativePart.php:19 Stack trace: #0 {main} thrown in /users/quirl/www/filemanager/spark/protected/runtime/updater/backups/vendor_1719561010/symfony/mime/Part/Multipart/AlternativePart.php on line 19