Fatal error: Uncaught Error: Class 'Symfony\Component\Mime\Part\AbstractMultipartPart' not found in E:\xampp\htdocs\resize_image\vendor\symfony\mime\Part\Multipart\MixedPart.php:19 Stack trace: #0 {main} thrown in E:\xampp\htdocs\resize_image\vendor\symfony\mime\Part\Multipart\MixedPart.php on line 19