Xhtml error after posting

I am using blue fade theme. I deleted the default post and ran an xhtml validation with no errors. I when post my own test post, and run another test. I get an error…

Error Line 91, Column 5: document type does not allow element “li” here; missing one of “ul”, “ol”, “menu”, “dir” start-tag
<li <a href=’https://www.spiritualmotivations.net/?m=200912&#8242; title=’December 200

If I delete the post it goes away, add the post and it comes back. Can someone point me in the right direction.
Thanks