Fatal error: Uncaught Error: Interface "Espo\Core\Mail\Message\Part" not found in C:\xampp\htdocs\application\Espo\Core\Mail\Message\MailMimeParser\Part.php:36 Stack trace: #0 {main} thrown in C:\xampp\htdocs\application\Espo\Core\Mail\Message\MailMimeParser\Part.php on line 36