Avahi error: Error while adding service.
I recently got this error message and traceback when a colleague closed the lid of his MacBook while gajim was running on my machine in the same LAN:
I'm running gajim 0.16.7 on Fedora 25:
The line causing the error is still in the newest gajim version and it looks like a race condition caused by the contact being removed while it is being updated: