Fatal error: Uncaught Error: Class 'Symfony\Component\Mime\Part\TextPart' not found in D:\xampp7\htdocs\www\nbkm\show_ir\vendor\symfony\mime\Part\DataPart.php:21 Stack trace: #0 {main} thrown in D:\xampp7\htdocs\www\nbkm\show_ir\vendor\symfony\mime\Part\DataPart.php on line 21