Aspose.email: Non english character issue in mail body

I am converting pst to html using Aspose.email for .Net (ver 21.11.0).
My pst file’s email messages body contain korian characters.
MapiMessage.Body property shows all korian characters correctly but MapiMessage.BodyHtml property doesn’t show korian characters correctly.

Converted html also doesn’t show korian characters correctly. Instead it shows “???” characters.

My code:
Aspose.Email.Storage.Pst.MessageInfoCollection contents = null;
PersonalStorage pst = null;
pst = PersonalStorage.FromFile(PSTfileName, false);
FolderInfo folderInfo = personalStorage.RootFolder;
contents = folderInfo.GetContents(iCount, 50);
foreach (MessageInfo content in contents)
{
MapiMessage mapiMessage = null;
mapiMessage = pst.ExtractMessage(content);
mapiMessage.Save(HTMLfileName, SaveOptions.DefaultHtml);

}

Please download pst file from https://we.tl/t-2zI6HVj7XB

@sangapankaj

Please create a standalone console application (source code without compilation errors) that helps us to reproduce your problem on our end and attach it here for testing. We will investigate the issue and provide you more information on it.