sudo apt-get update

E: The repository 'http://security.ubuntu.com/ubuntu yakkety-security Release' does no longer 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.
E: The repository 'http://pl.archive.ubuntu.com/ubuntu yakkety Release' does no longer 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.
W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/webupd8team-ubuntu-java-yakkety.list:2 and /etc/apt/sources.list.d/webupd8team-ubuntu-java-yakkety.list:3
W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/webupd8team-ubuntu-java-yakkety.list:2 and /etc/apt/sources.list.d/webupd8team-ubuntu-java-yakkety.list:4
E: The repository 'http://pl.archive.ubuntu.com/ubuntu yakkety-updates Release' does no longer 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.
E: The repository 'http://pl.archive.ubuntu.com/ubuntu yakkety-backports Release' does no longer 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.
W: http://archive.canonical.com/dists/precise/Release.gpg: Signature by key 630239CC130E1A7FD81A27B040976EAF437D05B5 uses weak digest algorithm (SHA1)
W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/webupd8team-ubuntu-java-yakkety.list:2 and /etc/apt/sources.list.d/webupd8team-ubuntu-java-yakkety.list:3
W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/webupd8team-ubuntu-java-yakkety.list:2 and /etc/apt/sources.list.d/webupd8team-ubuntu-java-yakkety.list:4