Hi there,
It seems like you're encountering a 404 error reported by Moz, with the end of the domain being "/%25s" on your blog's homepage https://kaydee.net/blog/. This issue can be a bit puzzling, but I'm here to help shed some light on it.
Firstly, the "/%25s" you're seeing in the Moz report is likely a URL-encoded character. The "%25" represents the "%" character itself, so there might be a special character or encoding issue causing this discrepancy. I had a similiar issue with my site rossk.