Fatal error: Uncaught Error: Class 'Symfony\Component\Mime\Part\DataPart' not found in C:\xampp73\htdocs\Respaldos\tracking_cie_v1\vendor\symfony\mime\Part\MessagePart.php:22 Stack trace: #0 {main} thrown in C:\xampp73\htdocs\Respaldos\tracking_cie_v1\vendor\symfony\mime\Part\MessagePart.php on line 22