Kismet

I've got a weird problem where Sonarr is trying to update my library but it's failing and causing some sort of loop that consumes 100% of a core on my CPU. I can't find any log that shows a problem or irregularity, the only hint that anything is wrong is the "Update Library" button on the main page is greyed out and rotating as if it's processing, and the logs will show a refreshseries command was queued for the first series in my list and it was completed, but then it doesn't move on to the next series.