Witam tak jak w temacie mam Ubuntu 20.04 LTS Pro. Kiedy próbuję zaktualizować pakiety przy pomocy komendy: sudo apt-get update sypie mi następującymi błędami:
sudo apt-get update
Stary:1 http://ppa.launchpad.net/alexlarsson/flatpak/ubuntu focal InRelease
Stary:2 http://pl.archive.ubuntu.com/ubuntu focal InRelease
Stary:3 http://archive.canonical.com/ubuntu focal InRelease
Stary:4 https://linux.teamviewer.com/deb stable InRelease
Stary:5 http://ppa.launchpad.net/apandada1/foliate/ubuntu focal InRelease
Stary:6 http://ppa.launchpad.net/appimagelauncher-team/stable/ubuntu focal InRelease
Stary:7 http://pl.archive.ubuntu.com/ubuntu focal-updates InRelease
Stary:8 https://brave-browser-apt-beta.s3.brave.com stable InRelease
Stary:9 http://dl.google.com/linux/chrome/deb stable InRelease
Pobieranie:10 https://deb.opera.com/opera-stable stable InRelease [2 416 B]
Stary:11 http://ppa.launchpad.net/cappelikan/ppa/ubuntu focal InRelease
Stary:12 http://dl.google.com/linux/earth/deb stable InRelease
Stary:13 http://pl.archive.ubuntu.com/ubuntu focal-backports InRelease
Stary:14 http://ppa.launchpad.net/forkotov02/ppa/ubuntu focal InRelease
Ign.:15 https://repo.vivaldi.com/archive/deb stable InRelease
Ign.:16 http://ppa.launchpad.net/libreoffice/libreoffice-4-2/ubuntu focal InRelease
Stary:17 https://packages.microsoft.com/repos/ms-teams stable InRelease
Ign.:18 http://ppa.launchpad.net/oguzhaninan/stacer/ubuntu focal InRelease
Stary:19 http://security.ubuntu.com/ubuntu focal-security InRelease
Stary:20 http://ppa.launchpad.net/peterlevi/ppa/ubuntu focal InRelease
Stary:21 https://esm.ubuntu.com/apps/ubuntu focal-apps-security InRelease
Ign.:22 https://repo.vivaldi.com/stable/deb stable InRelease
Stary:23 https://esm.ubuntu.com/apps/ubuntu focal-apps-updates InRelease
Stary:24 http://ppa.launchpad.net/sebastian-stenzel/cryptomator/ubuntu focal InRelease
Stary:25 https://repo.vivaldi.com/archive/deb stable Release
Stary:26 https://repo.vivaldi.com/stable/deb stable Release
Stary:27 https://esm.ubuntu.com/infra/ubuntu focal-infra-security InRelease
Błąd:28 http://ppa.launchpad.net/libreoffice/libreoffice-4-2/ubuntu focal Release
404 Not Found [IP: 185.125.190.80 80]
Błąd:29 http://ppa.launchpad.net/oguzhaninan/stacer/ubuntu focal Release
404 Not Found [IP: 185.125.190.80 80]
Stary:30 https://esm.ubuntu.com/infra/ubuntu focal-infra-updates InRelease
Stary:31 https://packagecloud.io/ookla/speedtest-cli/ubuntu focal InRelease
Błąd:10 https://deb.opera.com/opera-stable stable InRelease
Następujące podpisy nie mogły zostać zweryfikowane z powodu braku klucza publicznego: NO_PUBKEY 11EE8C00B693A745
Czytanie list pakietów... Gotowe
E: The repository 'http://ppa.launchpad.net/libreoffice/libreoffice-4-2/ubuntu focal 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/oguzhaninan/stacer/ubuntu focal 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: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://deb.opera.com/opera-stable stable InRelease: Następujące podpisy nie mogły zostać zweryfikowane z powodu braku klucza publicznego: NO_PUBKEY 11EE8C00B693A745
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://repo.vivaldi.com/archive/deb stable InRelease' doesn't support architecture 'i386'
Poproszę o jakąś poradę
sudo apt-get update
Stary:1 http://ppa.launchpad.net/alexlarsson/flatpak/ubuntu focal InRelease
Stary:2 http://pl.archive.ubuntu.com/ubuntu focal InRelease
Stary:3 http://archive.canonical.com/ubuntu focal InRelease
Stary:4 https://linux.teamviewer.com/deb stable InRelease
Stary:5 http://ppa.launchpad.net/apandada1/foliate/ubuntu focal InRelease
Stary:6 http://ppa.launchpad.net/appimagelauncher-team/stable/ubuntu focal InRelease
Stary:7 http://pl.archive.ubuntu.com/ubuntu focal-updates InRelease
Stary:8 https://brave-browser-apt-beta.s3.brave.com stable InRelease
Stary:9 http://dl.google.com/linux/chrome/deb stable InRelease
Pobieranie:10 https://deb.opera.com/opera-stable stable InRelease [2 416 B]
Stary:11 http://ppa.launchpad.net/cappelikan/ppa/ubuntu focal InRelease
Stary:12 http://dl.google.com/linux/earth/deb stable InRelease
Stary:13 http://pl.archive.ubuntu.com/ubuntu focal-backports InRelease
Stary:14 http://ppa.launchpad.net/forkotov02/ppa/ubuntu focal InRelease
Ign.:15 https://repo.vivaldi.com/archive/deb stable InRelease
Ign.:16 http://ppa.launchpad.net/libreoffice/libreoffice-4-2/ubuntu focal InRelease
Stary:17 https://packages.microsoft.com/repos/ms-teams stable InRelease
Ign.:18 http://ppa.launchpad.net/oguzhaninan/stacer/ubuntu focal InRelease
Stary:19 http://security.ubuntu.com/ubuntu focal-security InRelease
Stary:20 http://ppa.launchpad.net/peterlevi/ppa/ubuntu focal InRelease
Stary:21 https://esm.ubuntu.com/apps/ubuntu focal-apps-security InRelease
Ign.:22 https://repo.vivaldi.com/stable/deb stable InRelease
Stary:23 https://esm.ubuntu.com/apps/ubuntu focal-apps-updates InRelease
Stary:24 http://ppa.launchpad.net/sebastian-stenzel/cryptomator/ubuntu focal InRelease
Stary:25 https://repo.vivaldi.com/archive/deb stable Release
Stary:26 https://repo.vivaldi.com/stable/deb stable Release
Stary:27 https://esm.ubuntu.com/infra/ubuntu focal-infra-security InRelease
Błąd:28 http://ppa.launchpad.net/libreoffice/libreoffice-4-2/ubuntu focal Release
404 Not Found [IP: 185.125.190.80 80]
Błąd:29 http://ppa.launchpad.net/oguzhaninan/stacer/ubuntu focal Release
404 Not Found [IP: 185.125.190.80 80]
Stary:30 https://esm.ubuntu.com/infra/ubuntu focal-infra-updates InRelease
Stary:31 https://packagecloud.io/ookla/speedtest-cli/ubuntu focal InRelease
Błąd:10 https://deb.opera.com/opera-stable stable InRelease
Następujące podpisy nie mogły zostać zweryfikowane z powodu braku klucza publicznego: NO_PUBKEY 11EE8C00B693A745
Czytanie list pakietów... Gotowe
E: The repository 'http://ppa.launchpad.net/libreoffice/libreoffice-4-2/ubuntu focal 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/oguzhaninan/stacer/ubuntu focal 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: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://deb.opera.com/opera-stable stable InRelease: Następujące podpisy nie mogły zostać zweryfikowane z powodu braku klucza publicznego: NO_PUBKEY 11EE8C00B693A745
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://repo.vivaldi.com/archive/deb stable InRelease' doesn't support architecture 'i386'
Poproszę o jakąś poradę