Some speakers only heard by some participants

This has recently happened in two Talk meetings. There is one participants who, when they speak, can be heard but some people but not others. Other participants can speak and be heard by all other participants. The user logs out and in again and everyone can hear them. These are all users, not guests.

The Basics

  • Nextcloud Server version 30.0.8
  • Ubuntu 22.04
  • Web server : Caddy version 2.9.1
  • AIO v10.11.0
  • Is this the first time you’ve seen this error? No
  • When did this problem seem to first start? yesterday
  • Installation method AIO
  • Are you using CloudfIare, mod_security, or similar? YES, Cloudflare

Summary of the issue you are facing:

  • Call with 11 people on Talk. One participant can only be heard by 1 other participant, but not the others.
  • Seems random. Not on all calls. All users are nextcloud users, not guests.

Log entries

Nextcloud logs

FederatedUserNotFoundException Exception thrown: OCA\Circles\Exceptions\FederatedUserNotFoundException

Exception thrown: OCA\Circles\Exceptions\FederatedUserNotFoundException

RuntimeException Error during request to Context Chat Backend (ExApp): ExApp context_chat_backend not found

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