Ubuntu server : No mic and camera

Try this: React native + lib-jitsi-meet - audio/video tracks not getting added to the conference · Issue #1296 · jitsi/lib-jitsi-meet · GitHub

It works!

Until now, I have tried only with Firefox.
With google chrome, the situation is different.
With 2 users, the webcams and mic work properly. but, when a 3rd person is connected, the display of webcam disappears and see only the avatar.
I don’t know if I have an issue with the bandwidth.