I created a support ticket (#356780) to report the issue. Hopefully it’s a quick fix, but it wouldn’t hurt if you also let them know it’s impacting you and reference the ticket.
The issue stems from something that changed in the payload of New Topic trigger at some point yesterday. Looking at my Zap’s runs, I see that Topic Url changed from a complete URL to an incomplete URL missing the domain info and only providing the Topic path.

