xxx@jitsi:~ sudo apt-get update
Hit:1 http://us.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:3 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:5 http://nginx.org/packages/mainline/ubuntu bionic InRelease
Ign:6 https://download.jitsi.org stable/ InRelease
Err:7 https://download.jitsi.org stable/ Release
Cannot initiate the connection to download.jitsi.org:443 (2001:660:2402::22). - connect (101: Network is unreachable)
Could not connect to download.jitsi.org:443 (130.79.200.22), connection timed out [IP: 130.79.200.22 443]
Reading package lists... Done
E: The repository 'https://download.jitsi.org stable/ Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
xxx@jitsi:~