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Has anybody been able to overcome this issue while installing GDAL in Ubuntu 20.04 LTS or should I just downgrade my Ubuntu version?

sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable

Err:20 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu focal Release
  404  Not Found [IP: 91.189.95.83 80]
Err:21 http://ppa.launchpad.net/ubuntugis/ppa/ubuntu focal Release
  404  Not Found [IP: 91.189.95.83 80]
Reading package lists... Done

E: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/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.
E: The repository 'http://ppa.launchpad.net/ubuntugis/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.
Antarqui
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  • Thanks, but that did not work. It keeps giving me the same error E: The repository 'http://ppa.launchpad.net/ubuntugis/ppa/ubuntu focal Release' does not have a Release file.. – Antarqui Jun 17 '20 at 14:33
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    What of "The PPA you've added does not support your version of Ubuntu" don't you understand? It will not work for 20.04. Maybe later, but not now. But why would you need a PPA for gdal anyways? The PPA has version 3.0.4 for 18.04, 20.04 has 3.0.4 in universe repo. Simply install from there without the ppa. – pLumo Jun 17 '20 at 20:51

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