Unable to delete a draft

I am using eM Client Version 8.1.876 (234bb7a)

eM is showing a draft, however the draft is not on my gmail when I view it on the web. I am unable to delete the draft in eM. When I open the draft, there I no content. How can I delete it?
Following is a screen shot.

Right-click on the All Mail folder and choose Properties > Repair.