┌─╼ [~]
└────╼ sudo apt update
[sudo] password for jeremie:
Hit:1 http://security.ubuntu.com/ubuntu yakkety-security InRelease
Ign:2 http://ppa.launchpad.net/blueman/ppa/ubuntu yakkety InRelease
Hit:3 http://ca.archive.ubuntu.com/ubuntu yakkety InRelease
Hit:4 http://ca.archive.ubuntu.com/ubuntu yakkety-updates InRelease
Hit:5 http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu yakkety InRelease
Hit:6 http://repository.spotify.com stable InRelease
Hit:7 http://ca.archive.ubuntu.com/ubuntu yakkety-backports InRelease
Hit:8 http://ppa.launchpad.net/webupd8team/java/ubuntu yakkety InRelease
Hit:9 https://deb.nodesource.com/node_7.x yakkety InRelease
Hit:10 http://ppa.launchpad.net/webupd8team/sublime-text-3/ubuntu yakkety InRelease
Hit:11 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu yakkety InRelease
Err:12 http://ppa.launchpad.net/blueman/ppa/ubuntu yakkety Release
  404  Not Found
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/blueman/ppa/ubuntu yakkety 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.