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I just tried to run an update and got this message from the app center:

enter image description here

I've tried reading around but all the potential answers I've found go over my head. I'm not really sure what I'm doing re: messing with repositories. Does it seem like a line has somehow been changed in sources.list? What should be there?

UPDATE:

Upon suggestion, I tried

sudo ppa-purge ppa:versable/elementary-update

And I got:

W: The repository 'http://ppa.launchpad.net/versable/elementary-update/ubuntu xenial Release' does not have a Release file.

E: Failed to fetch http://ppa.launchpad.net/versable/elementary-update/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.

Warning: apt-get update failed for some reason

Thanks for any help.

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Looks like you've installed the following third party ppa: https://launchpad.net/~versable/+archive/ubuntu/elementary-update

I would recommend removing it using ppa-purge:

sudo apt install ppa-purge
sudo ppa-purge ppa:versable/elementary-update

If you don't want to remove the packages that you've installed with this ppa you should contact them. But it looks like the project is no longer maintained, but then again I have a hard time understanding Launchpad.

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  • Cheers for the answer. So, this error message doesn't neccesarily mean I'm going to miss proper updates? Just for some thing I installed? – YoloSwaggins Feb 4 '18 at 20:23
  • Yes. As far as I know, when there is an issue with one of the ppa's there is no way to upgrade without removing /fixing that ppa. (I don't like how fragile it is). It's probably one of the reasons elementary OS discourages installing custom ppa's. So, I would strongly recommend removing that ppa. ppa-purge will list what would be removed when removing a ppa. – Peter Uithoven Feb 4 '18 at 20:55
  • Hm, for some reason ppa-purge didn't work. It says the same thing as the pop up: 'sudo ppa-purge ppa:versable/elementary-update Updating packages lists W: The repository 'ppa.launchpad.net/versable/elementary-update/ubuntu xenial Release' does not have a Release file. E: Failed to fetch ppa.launchpad.net/versable/elementary-update/ubuntu/dists/… 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. Warning: apt-get update failed for some reason' And I looked up the repo and it's Tweaks – YoloSwaggins Feb 4 '18 at 21:04
  • What was the output of using ppa-purge? Did that give an error? (You could also update your question, that would give you more formatting options) – Peter Uithoven Feb 4 '18 at 21:08
  • Because I was curious I opened: github.com/elementary/appcenter/issues/596 – Peter Uithoven Feb 4 '18 at 21:35

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