Workers fail to start without a listener

[turt2live]

People keep trying to set up workers without a listener (not even a metrics one), and this causes a configuration error on startup. Should probably still work, even if running blind is not the best choice

[evilham]

For context: https://matrix.to/#/!HsxjoYRFsDtWBgDQPh:matrix.org/$15515594544gbcvx:unchat.cat?via=matrix.org&via=chat.weho.st&via=disroot.org

My issue turned out not to be exactly this, still there is room for improvement. I'd be happy to add a PR with better documentation if this is expected behaviour.

If OTOH cases like the appservice and pusher workers, not having worker_listeners defined in the configuration is OK, this would require defaulting to an empty list and some code changes which I could also take a look into.

[evilham]

Adding some more information: setting worker_listeners: [] also works for, e.g. appservice and pusher.

[erikjohnston]

Hopefully #4853 fixes this

[evilham]

Indeed, @turt2live can close this now :)