Sudden XML error in my RSS Feed

My site is at michaelgaither.com/home.

My blog feed was working up until yesterday. I haven’t changed anything. The feed still works in my RSS reader and WiseStamp. However, Networkblogs no longer pushes my blogs, and I receive an XML error when trying to access the actual feed link:

https://www.michaelgaither.com/home/feed

Any ideas? Being that’s it’s sorta working, I’m not sure what actually might be broken. Thanks.