I run 2 Discourse instances:
- a standard one (Docker)
- a dev one, behind a nginx proxy
I’ve set up the same webhook on both instances. It works well from the standard instance, but not from the dev instance:
the Ping button never gets a response and stays gray, although the corresponding POST event seems to appear in the nginx log (EDIT: this log entry is about the click event localhost->Discourse, not the outgoing webhook ping message).
I see no error in the Discourse server console or nginx logs.
What should I check?