解决 无法连接Minecraft Server 显示身份验证服务器目前处于宕机状态。请稍后再试。抱歉！

在终端输入一下指令

apt update && apt install systemd-resolved -y
systemctl enable --now systemd-resolved
ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf