Hello I have Ubuntu 20.04 and I installed grub-customizer this 2 commands First:- sudo add-apt-repository ppa:danielrichter2007/grub-customizer
and Second:- sudo apt install grub-customizer
and after installing, it works perfectly but everytime when I type this command to do update via terminal the command sudo apt update
gives this output :-
Ign:8 http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu focal InRelease
Err:9 http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu focal Release
404 Not Found [IP: 91.189.95.85 80]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/danielrichter2007/grub-customizer/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 don't know what and why is this but want to solve it. Thankyou.