I'm having trouble running this on Janitor, and I think (I know literally nothing) that it might be because the web address is "janitorai.com/chats", and not "/chat", which you have. But, I could be wrong. Could you confirm this or offer any clarification on this?
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Ah, that seems to be part of it, yes, though even by fixing that, it doesn't seem to be working... I'd say the website probably made some small updates to its HTML. I'll see if I can find a solution!
Edit:
Found the problem - just another check further down that also needed to be updated to /chats/. I've uploaded the fix, it should now work as intended (: