E: The repository 'https://ppa.launchpadcontent.net/flatpak/stable/ubuntu kinetic 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.
答案1
您不需要 PPA 即可在 Ubuntu 22.10 中安装 Flatpak,因为它已存在于默认存储库中。您收到此错误消息是因为 PPA 没有适合您的 Ubuntu 版本的软件包。
首先,删除 PPA。
sudo add-apt-repository --remove ppa:flatpak/stable
然后,更新 APT 索引。
sudo apt update
最后,使用以下命令安装 flatpak
sudo apt install flatpak