conference.videobridgeNotAvailable, port 4443 not open but jitsi-videobridge is running

Hello,
I’m following Arch Linux’s guide to install jitsi on an arch server. I’m encountering the following problem: when two users are joining a room, it crashes for each user.
I have the following error for both of them (client-side): CONFERENCE FAILED: conference.videobridgeNotAvailable
However, server-side, jitsi-videobridge is running and no error is listed in the logs. I only have series of these lines:
jvb.sh[816290]: 2021-03-15 15:19:34.580 INFO: [15] VideobridgeExpireThread.expire#140: Running expire()
jvb.sh[816290]: 2021-03-15 15:19:34.952 INFO: [16] HealthChecker.run#170: Performed a successful health check in PT0.000017177S. Sticky failure: false
jvb.sh[816290]: 2021-03-15 15:19:44.951 INFO: [16] HealthChecker.run#170: Performed a successful health check in PT0.000046138S. Sticky failure: false

I did the 10000 UDP port test and it is open. However, netstats -ln does not show TCP port 4443 listening. Is it normal?

I see no relevant errors in the logs (jicofo, jitsi-videobridge, prosody and nginx) and all services are running.
I already tried adding JVB_OPTS="–apis=xmpp," to jitsi-videobridge.conf and it did not change anything.

Any idea what’s wrong?

(Switching to a Debian server is not an option)

Hi Perdu,

Please excuse my comments below, I just hope they are useful to you.

I am not familiar with the ArchLinux installation method, and I noticed that port 4443 is not mentioned in the list provided by “Setup and configure your firewall”, and is not in my server’s configuration.

I would recommend reading through the below guides, even if they are for Debian.

I am hoping you can adapt the Debian guide for your OS version.

I did notice that the archlinux instructions “was last edited on 12 March 2021, at 15:5”, so hopefully they would be correct. Can you post a question to the people who created these instructions?

For the record, I ended up installing it with Docker (GitHub - jitsi/docker-jitsi-meet: Jitsi Meet on Docker).
The Arch Linux page was outdated and has been updated, though.