Forgive me but I am a n00bie at troubleshooting Ubuntu and this is really my first try at upgrading.
I am running into a number of errors when I run 'sudo apt update' specifically the following out of a long list of Hit and Get results:
Err:2 https://cli.github.com/packages stable InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 23F3D4EA75716059
-- is there a command I can run that will fix this? if so what is it?
Err:11 http://security.ubuntu.com/ubuntu impish-security Release
404 Not Found [IP: 91.189.91.38 80]
--how would I figure out how to resolve these 404 errors? Is there a place to go to find the live IP?
Err:11 http://security.ubuntu.com/ubuntu impish-security Release
404 Not Found [IP: 91.189.91.38 80]
Err:13 https://content.runescape.com/downloads/ubuntu trusty InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7373B12CE03BEB4B
--I uninstalled this so I'm not sure how to track it down!
Err:20 https://ppa.launchpadcontent.net/gabor-karsay/parlatype/ubuntu jammy Release
404 Not Found [IP: 185.125.190.52 443]
and then there's this block:
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://cli.github.com/packages stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 23F3D4EA75716059
W: Target Sources (restricted/source/Sources) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list:7
E: The repository 'http://security.ubuntu.com/ubuntu impish-security 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://content.runescape.com/downloads/ubuntu trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7373B12CE03BEB4B
E: The repository 'https://ppa.launchpadcontent.net/gabor-karsay/parlatype/ubuntu jammy 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 (restricted/source/Sources) is configured multiple times in /etc/apt/sources.list:2 and /etc/apt/sources.list:7
How do I pick this apart? Where do I even start? I'm not afraid of the terminal but I'm terrified of nuking my machine by accident! Can someone help me break this into a series of bite size chunks or point me to resources to understand what I'm looking at better? I just found the man pages website and have yet to understand how to navigate it enough to find what I need! I figure if I can resolve most if not all of the above errors I can get past the upgrade errors I have too. It hangs on the second step pointing me to a "network error".
Tried: digging through Stack Exchange, Stack Overflow, several Ubuntu tutorial sites, bumped into the online copy of the man pages (I have yet to figure out how to use the terminal to get them and navigate them there), turning off the Live Updater, changing the settings, changing what server from a specific one to a general (I think) server.
I'd truly love to upgrade and any assistance or resources would be fantastic. If I can clarify anything please let me know and I'll do my best!