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I am running Ubuntu 18.04. I can't update in the terminal. Every time I try (by typing sudo apt-get update), I get the message:

E: The repository 'http://ppa.launchpad.net/noobslab/themes/ubuntu bionic 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.
wjandrea
  • 14,504
Peter Carter
  • 1

1 Answers1

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The ppa you're trying to use does not support 18.04. If you used this command:

sudo add-apt-repository ppa:noobslab/themes

to add it, use:

sudo add-apt-repository --remove ppa:noobslab/themes

to remove it.

Stormlord
  • 6,807