# Error while processing route: adminGroups.index
**URL:** https://meta.discourse.org/t/error-while-processing-route-admingroups-index/395008
**Category:** Support
**Created:** [February 3, 2026, 3:46am UTC](https://meta.discourse.org/t/error-while-processing-route-admingroups-index/395008 "2026-02-03T03:46:14Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@bdfl](https://meta.discourse.org/u/bdfl)
#### Post date: [February 3, 2026, 3:46am UTC](https://meta.discourse.org/t/error-while-processing-route-admingroups-index/395008/1 "2026-02-03T03:46:14Z")
Hi, sorry if this isn’t the right place to post this. I upgraded to ESR v2026.1.0 (c013d80bc7) and I can’t reach my groups page in production on Docker.
I have no problem in dev on Ruby/Rails. The problem persists with custom theme and plugins disabled and CDN paused. Other admin routes work fine (/users, /site\_settings, etc.). The browser console shows “Error while processing route: adminGroups.index”. The groups API returns data correctly (/groups.json) but admin groups API returns 404 not found (/admin/groups.json).
Does anyone else have trouble navigating to the groups page from the admin UI?
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### Author:  [@awesomerobot](https://meta.discourse.org/u/awesomerobot)
#### Post date: [February 3, 2026, 3:38pm UTC](https://meta.discourse.org/t/error-while-processing-route-admingroups-index/395008/2 "2026-02-03T15:38:19Z")
I tried this out on the same version, and unfortunately I’m not able to reproduce the issue.
> [@bdfl](#):
>
> The browser console shows “Error while processing route: adminGroups.index”. The groups API returns data correctly (/groups.json) but admin groups API returns 404 not found (/admin/groups.json).
Is there more detail available with that error?
Technically `/admin/groups.json` doesn’t exist, in your network tab you should see a `/groups.json` XHR request, which contains the group data… while there’s an `/admin/groups` request for the HTML of the template
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### Author:  [@bdfl](https://meta.discourse.org/u/bdfl)
#### Post date: [February 3, 2026, 9:30pm UTC](https://meta.discourse.org/t/error-while-processing-route-admingroups-index/395008/3 "2026-02-03T21:30:38Z")
Thanks, Kris. The /admin/groups route returns 404 and never loads the Ember.js admin UI, so no /groups.json XHR requests are made. Did you try it on the same version on Docker and an admin account?