Whenever I click on software updater it says Failed to download repository information.
It's been saying this for the past few days now and I don't know why, my Internet connection is fine, I am able to manually download software.
Sometimes it crashes when I click okay, then attempts to look for updates again and gives me the same message.
[EDIT] I just tried an answer posted where I reset where the downloads come from, but I was left with this message:
W:The repository 'http://ppa.launchpad.net/noobslab/noobslab-conky/ubuntu xenial Release' does not have a Release file., W:Data from such a repository can't be authenticated and is therefore potentially dangerous to use., W:See apt-secure(8) manpage for repository creation and user configuration details., W:https://content.runescape.com/downloads/ubuntu/dists/trusty/InRelease: Signature by key AAC9264309E4D717441DB9527373B12CE03BEB4B uses weak digest algorithm (SHA1), E:Failed to fetch http://ppa.launchpad.net/noobslab/noobslab-conky/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found, E:Some index files failed to download. They have been ignored, or old ones used instead.