Fatal error: Uncaught Error: Class 'Zend_Mail_Part' not found in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables\libreria\Zend\Mail\Message.php:39
Stack trace:
#0 {main}
  thrown in C:\MANTUM\xampp2\htdocs\MNT\ventasvariables\libreria\Zend\Mail\Message.php on line 39