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ircserver@irc:~/unrealircd$ sudo apt-get update && sudo apt-get upgrade
Hit:1 http://us.archive.ubuntu.com/ubuntu jammy InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu jammy-backports InRelease
Ign:4 https://ppa.launchpadcontent.net/gwendal-lebihan-dev/hexchat-stable/ubuntu jammy InRelease
Hit:5 http://us.archive.ubuntu.com/ubuntu jammy-security InRelease
Err:6 https://ppa.launchpadcontent.net/gwendal-lebihan-dev/hexchat-stable/ubuntu jammy Release
404 Not Found [IP: 185.125.190.52 443]
Reading package lists... Done
E: The repository 'https://ppa.launchpadcontent.net/gwendal-lebihan-dev/hexchat-stable/ubuntu jammy Release' does not have 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.
ircserver@irc:~/unrealircd$