Fatal error: Uncaught Error: Class 'Symfony\Component\Mime\Part\DataPart' not found in G:\projects\bot.edutalk.edu.vn\vendor\symfony\mime\Part\MessagePart.php:22 Stack trace: #0 {main} thrown in G:\projects\bot.edutalk.edu.vn\vendor\symfony\mime\Part\MessagePart.php on line 22