安装POL时的消息
download failed:
E:htpp://security.ubuntu.com/ubuntu focal-updates/main amd64 libproxy1-plugin-gsettings
amd64 0.4.15ubuntu1.2 isnot (yet) available (403 forbidden [ ip:91.189.88.142 80])
答案1
软件包可从 security/updates 和 focal/updates 获取。编辑您的内容/etc/apt/sources.list如下：
deb http://us.archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
然后运行：
sudo apt update
sudo apt install libproxy1-plugin-gsettings