Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Part\DataPart" not found in D:\Apache24\www\hl_eis-new\vendor\symfony\mime\Part\MessagePart.php:22 Stack trace: #0 {main} thrown in D:\Apache24\www\hl_eis-new\vendor\symfony\mime\Part\MessagePart.php on line 22