Unable to Process emails without Subject Line by using Outlook wrapper DLL package

Please refer the attached below files for more details:

1. Outlook Cmd_GetSubject.png: The outlook dll command that we are using to get the Subject while reading the outlook emails via Bot.
2. Outlook Cmd_MarkAsRead.png: This outlook command we are using to mark the emails to Read, This command is giving error when email subjectline is blank.
3. Blank Subject Line Error.png: The Highlighted are the error message we are getting while executing the Blank Subject line Outlook email for MarkasRead & Download Attachments Outloook Commands.