sudo add-apt-repository ppa:hugin/hugin-builds
but got the error/warning message:
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/hugin/hugin-builds/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.
Can anyone advise how I persuade my system to use this PPA?
BugBear