Sudo apt-get update problems with some keyring

General Help
1 
sudo apt-get update
Holen:1 http://download.opensuse.org/repositories/home:/manuelschneid3r/xUbuntu_20.04  InRelease [1’554 B]
OK:2 http://ppa.launchpad.net/zorinos/apps/ubuntu jammy InRelease
OK:3 https://updates.signal.org/desktop/apt xenial InRelease
Fehl:1 http://download.opensuse.org/repositories/home:/manuelschneid3r/xUbuntu_20.04  InRelease
  Die folgenden Signaturen waren ungültig: EXPKEYSIG 1488EB46E192A257 home:manuelschneid3r OBS Project <home:manuelschneid3r@build.opensuse.org>
OK:4 http://ppa.launchpad.net/zorinos/drivers/ubuntu jammy InRelease
Ign:5 https://dl.thorium.rocks/debian stable InRelease
OK:6 http://ppa.launchpad.net/zorinos/patches/ubuntu jammy InRelease
OK:7 https://dl.thorium.rocks/debian stable Release
Ign:8 https://dl.thorium.rocks/debian stable Release.gpg
OK:9 http://ppa.launchpad.net/zorinos/stable/ubuntu jammy InRelease
OK:10 https://ppa.launchpadcontent.net/agornostal/ulauncher/ubuntu jammy InRelease
Ign:11 https://releases.warp.dev/linux/deb stable InRelease
OK:12 http://archive.ubuntu.com/ubuntu jammy InRelease
OK:13 https://ppa.launchpadcontent.net/papirus/papirus/ubuntu jammy InRelease
OK:14 https://releases.warp.dev/linux/deb stable Release
OK:15 https://repo.nextdns.io/deb stable InRelease
OK:16 http://archive.ubuntu.com/ubuntu jammy-updates InRelease
OK:17 http://archive.ubuntu.com/ubuntu jammy-backports InRelease
OK:18 http://archive.ubuntu.com/ubuntu jammy-security InRelease
Holen:19 https://typora.io/linux ./ InRelease [793 B]
OK:21 https://packages.zorinos.com/stable jammy InRelease
OK:22 https://packages.zorinos.com/patches jammy InRelease
OK:23 https://packages.zorinos.com/apps jammy InRelease
OK:24 https://packages.zorinos.com/drivers jammy InRelease
OK:25 https://packages.zorinos.com/premium jammy InRelease
Es wurden 2’347 B in 2 s geholt (1’135 B/s).
Paketlisten werden gelesen… Fertig
W: Während der Überprüfung der Signatur trat ein Fehler auf. Das Depot wurde nicht aktualisiert und die vorherigen Indexdateien werden verwendet. GPG-Fehler: http://download.opensuse.org/repositories/home:/manuelschneid3r/xUbuntu_20.04  InRelease: Die folgenden Signaturen waren ungültig: EXPKEYSIG 1488EB46E192A257 home:manuelschneid3r OBS Project <home:manuelschneid3r@build.opensuse.org>
W: Fehlschlag beim Holen von http://download.opensuse.org/repositories/home:/manuelschneid3r/xUbuntu_20.04/InRelease Die folgenden Signaturen waren ungültig: EXPKEYSIG 1488EB46E192A257 home:manuelschneid3r OBS Project <home:manuelschneid3r@build.opensuse.org>
W: Einige Indexdateien konnten nicht heruntergeladen werden. Sie wurden ignoriert oder alte an ihrer Stelle benutzt.

What is the problem with this manuelschneid3r keyring and how do I fix it?

2

translation German/English to investigate:

W: An error occurred during the verification of the signature. The repository has not been updated and the previous index files are used. GPG error: /repositories/home:/manuelschneid3r/xUbuntu_20.04 - openSUSE Download InRelease: The following signatures were invalid: EXPKEYSIG 1488EB46E192A257 home:manuelschneid3r OBS Project

W: Failed to fetch http://download.opensuse.org/repositories/home:/manuelschneid3r/xUbuntu_20.04/InRelease The following signatures were invalid: EXPKEYSIG 1488EB46E192A257 home:manuelschneid3r OBS Project

W: Some index files could not be downloaded. They were ignored or old ones were used in their place.

You have an opensuse repository. what was that for?

3

It looks that faulty repo was configured for Ubuntu 20.04 but Zorin OS 17 is based on Ubuntu 22.04. You can try to remove the repository from the Software Store, or following the steps from the documentation where you first added it, and then add it again but for the correct version of Ubuntu.

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