post – autosave & Error 404 – Not Found

Hi
I am new to this so please be patient with me. I am using the DynaBlue theme.
I recently published a post, and included it so it showed up in the “Feature It” scrolling post plugin.
However, I now have the ‘proper post’ with the correct permalink URL showing up, as well as an ’empty’ post with ‘-autosave’ at the end of the URL. In the “Feature It’ the title, and a few lines of the post appear. If you click on this link, you get an ‘error 404 – not found’ message.
I think that what may have happened was that the post ‘autosaved’ before I changed the permalink description.
If I untick the “Feature It” option for this post, the real post is excluded, but the ‘autosaved’ one remains. I am unsure as to how to find & delete the ‘autosaved’ link.

Thanks & hoping someone can assist me