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

[Fabien_1015 (Fabien)]

Thanks a lot for the help!

I have exactly this configuration:

Installing Discourse Behind Reverse Proxy using recommended (supported) installation

In this post, I will show you exactly how to run discourse behind a nginx reverse proxy. While still using the supported installation methods. Requirements: Valid domain name. Valid ssl certificate. Valid DNS entries pointing to the domain name. Valid working email server or smtp provider. Working Nginx Reverse Proxy and ability to reach the instance and create the SSL cert for later use. VM or LxC container that can run docker. For this guide I will be using my own instance as an example, w…

… except it was missing the “proxy_set_header X-Real-IP $remote_addr;”.

So, I guess it could be related.
It seems to work ok now. I’ll do more tests and report it tomorrow if this solves the issue.
Thanks!