Error 500 after upgrade to v2026.9.0 / temporary solved by clearing browser data

[merefield (Robert)]

Are you operating some kind of proxy - can you describe the architecture?

Looks like you are trying to pass the string “unix:” to the ip_address field …

This could be a misconfiguration upstream of Discourse.

There was a similar issue reported, and solved here which related to Caddy:

I'm using a Unix socket between Caddy and Discourse instead of TCP, but from time to time I get a 'unix:' error

@Falco @satonotdead I managed to fix it. I waited a good while to make sure it was really fixed, and it seems it is. The setup Discourse runs in Docker and exposes nginx on a Unix socket (/var/discourse/shared/standalone/nginx.http.sock). Caddy sits in front of it as a reverse proxy and passes the client’s real IP through X-Real-IP. Two things had to change: the nginx config inside the container, and the way I run the rebuild. 1. app.yml ## Plugins go here ## see https://meta.discourse.org/t…