Erro apt-get update Ubuntu

sousamer escreveu:

Eu to tentando instalar alguns programas no Ubuntu e não to conseguindo porque fica dando 404 Not Found, e quando do sudo apt-get update aparece isso:

Atingido:1 http://archive.ubuntu.com/ubuntu bionic InRelease
Atingido:2 http://archive.canonical.com/ubuntu bionic InRelease
Ign:3 http://ppa.launchpad.net/cpug-devs/ppa/ubuntu bionic InRelease
Atingido:4 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
Atingido:5 http://archive.ubuntu.com/ubuntu bionic-backports InRelease
Atingido:6 http://archive.ubuntu.com/ubuntu bionic-security InRelease
Atingido:7 http://ppa.launchpad.net/maarten-baert/simplescreenrecorder/ubuntu bionic InRelease
Ign:8 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu bionic InRelease
Ign:9 http://ppa.launchpad.net/trebelnik-stefina/ubuntu-tweak/ubuntu bionic InRelease
Ign:10 http://ppa.launchpad.net/tualatrix/ppa/ubuntu bionic InRelease
Err:11 http://ppa.launchpad.net/cpug-devs/ppa/ubuntu bionic Release
404 Not Found [IP: 91.189.95.83 80]
Err:12 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu bionic Release
404 Not Found [IP: 91.189.95.83 80]
Err:13 http://ppa.launchpad.net/trebelnik-stefina/ubuntu-tweak/ubuntu bionic Release
404 Not Found [IP: 91.189.95.83 80]
Err:14 http://ppa.launchpad.net/tualatrix/ppa/ubuntu bionic Release
404 Not Found [IP: 91.189.95.83 80]
Lendo listas de pacotes... Pronto
W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/maarten-baert-ubuntu-simplescreenrecorder-bionic.list:2 and /etc/apt/sources.list.d/maarten-baert-ubuntu-simplescreenrecorder-bionic.list:3
E: The repository 'http://ppa.launchpad.net/cpug-devs/ppa/ubuntu bionic 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.
E: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/ubuntu bionic 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.
E: The repository 'http://ppa.launchpad.net/trebelnik-stefina/ubuntu-tweak/ubuntu bionic 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.
E: The repository 'http://ppa.launchpad.net/tualatrix/ppa/ubuntu bionic 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.
W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/cpug-devs-ubuntu-ppa-bionic.list:2 and /etc/apt/sources.list.d/cpug-devs-ubuntu-ppa-bionic.list:3
W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/maarten-baert-ubuntu-simplescreenrecorder-bionic.list:2 and /etc/apt/sources.list.d/maarten-baert-ubuntu-simplescreenrecorder-bionic.list:3