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I've been trying to update my Ubuntu 20.04 using the command sudo apt update but I always get this same error:

E: The repository 'http://ppa.launchpad.net/t-tujikawa/ppa/ubuntu focal 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.

I tried to add that PPA with sudo add-apt-repository ppa:t-tujikawa/ppa but I get the same output error above.

What should I do to solve this issue?

Melebius
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elakhdar_ayoub
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3 Answers3

3

You need to remove that old repository, since it hasn't been updated.

The Error above means that the repository does not have a release package of the particular software for your version of Ubuntu. i.e. 20.04 Focal Fossa

Remove the obsolete PPA by running the following command:

sudo add-apt-repository --remove ppa:t-tujikawa/ppa

You can install aria2 from the official Ubuntu release using command:

sudo apt-get install aria2
Rakesh Prasanna R
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2

Open a terminal and type sudo nano /etc/apt/sources.list
then arrow-down to the line/s with tujikawa in them and type a # at the start of the line.
Then save over this file and run your apt commands again.
There is an official aria2 release for 20.04 you can try it sudo apt-get install aria2

darth_epoxy
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1

You need to remove that old repo, since it hasn't been updated in 7 years, and hasn't even got an entry for focal (see here). The package aria2 is included in the focal universe repo.

Edit the file /etc/apt/sources.list and do the following:

Remove the line with:

deb http://ppa.launchpad.net/t-tujikawa/ppa/ubuntu focal Release

And make sure following line is uncommented:

deb http://archive.ubuntu.com/ubuntu focal universe

Then you should be able to run your sudo apt update and sudo apt upgrade again without errors.

Akbarkhon Variskhanov
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Artur Meinild
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