I just installed Ubuntu 21.04 and subsequently tried installing Keyman 14, following the instructions on the homepage:
sudo add-apt-repository ppa:keymanapp/keyman sudo apt upgrade sudo apt install keyman onboard-keyman
However, the repository contains no version for Ubuntu 21.04, so the repository gives an error upon running
sudo apt upgrade:
E: The repository 'http://ppa.launchpad.net/keymanapp/keyman/ubuntu hirsute 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.
So how do I go about installing Keyman 14 on Ubuntu 21.04?