在Deepin v20.9上安装了Docker，运行3个容器服务，原本使用一切正常。后来调整了主机IP地址，在关机重启的过程中，Deepin无法关机，卡死。就长按电源键强行关机。再次开机后，就无法进入操作系统，报如下错误：

You are in emergency mode. After logging in, type "journalctl -xb" to view system logs, "systemctl reboot" to reboot, "systemctl default" or "exit" to boot into default mode.

Cannot open access to console, the root account is locked.

See sulogin(8) man page for more details.

Press Enter to continue.

论坛里哪位高手给指点一下，如何解决？里面有我需要的数据需要拷贝出来。