番茄网在添加
add-apt-repository ppa:djcj/hybrid
后，执行
ap-get update -y
报错如下：
Reading package lists… Done
E: The repository ‘http://ppa.launchpad.net/djcj/hybrid/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.
解决办法：将对应的PPA删除掉即可，使用以下命令切换到对应PPA目录：
cd /etc/apt/sources.list.drm djcj-ubuntu-hybrid-focal.listrm djcj-ubuntu-hybrid-focal.list.save
