Ubuntu Gnome 17.04; upgraded from 14.04 LTS and for some reason this nonsense is all over my terminal when I do
$ sudo apt-get update && sudo apt-get
I get
W: The repository 'http://ppa.launchpad.net/jonathonf/python-3.6/ubuntu zesty Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://ppa.launchpad.net/minecraft-installer-peeps/minecraft-installer/ubuntu zesty Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/jonathonf/python-3.6/ubuntu/dists/zesty/main/binary-amd64/Packages 404 Not Found
E: Failed to fetch http://ppa.launchpad.net/minecraft-installer-peeps/minecraft-installer/ubuntu/dists/zesty/main/binary-amd64/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
I never saw this before on 14.04LTS (although I admit, I have been away from Ubuntu for about two years); I even lost my username and password apparently so pardon me for this new account. I tried all of my emails, but no go so here be my new account. Yay me!
Back to the question; any idea why I am getting all of this? And who the heck is jonathonf? Thinking maybe it is an old 14.04 rep that is no longer supported? This is a fresh install with only a few programs and Minecraft installed for the kiddos.
Removing errros
“Minecraft Installer Peeps” team and Jonathon F doesn't have a release targeting Zesty yet.
I'd advise you to run these following commands to get rid of the errors
sudo add-apt-repository --remove ppa:minecraft-installer-peeps/minecraft-installer
sudo add-apt-repository --remove ppa:jonathonf/python-3.6
Then run
sudo apt-get update
Installing the packages you want
If you want to get python 3.6 on 17.04, then you don't need to add PPA, it's already available on Universe repository
sudo apt-get install python3.6
And Minecraft is officially available as .jar file on their website
References and extra information
How do I enable the "Universe" repository?
Trying to install Minecraft on Ubuntu 16.04
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