I’ve installed Jitsi on ubuntu 18.04 LTS follow this instructions: https://www.howtoforge.com/tutorial/how-to-create-your-own-video-conference-using-jitsi-meet-on-ubuntu-1804/
There is no problem with the installations.
After installations, I tried to test using web browser (Chrome). when I click go on “start a new meeting” window, the widow didn’t display the camera and then I got message: “You have been disconnected. Rejoin now”.
Need your advice for this problem.