尝试安装一些依赖项后，Ubuntu（最新版本）上出现以下错误：
红色的完整错误消息是：
Failed to start default target:
Transaction for graphical.target is destructive
(emergency.target has 'start' job queued, but 'stop' is included in transaction)
启动 Ubuntu 时出错
尝试安装一些依赖项后，Ubuntu（最新版本）上出现以下错误：
红色的完整错误消息是：
Failed to start default target:
Transaction for graphical.target is destructive
(emergency.target has 'start' job queued, but 'stop' is included in transaction)