当我尝试更新 Ubuntu 服务器 18.04 时，出现此错误：
Failed to connect to https://changelogs.ubuntu.com/meta-release-development. Check your Internet connection or proxy settings.
我已尝试删除/var/lib/ubuntu-release-upgrader/release-upgrade-available但仍然出现相同的错误。
答案1
请尝试以下操作：
sudo rm /var/lib/ubuntu-release-upgrader/release-upgrade-available
sudo /usr/lib/ubuntu-release-upgrader/release-upgrade-motd