ROS ERROR: cannot download default sources list from...

运行sudo rosdep init
出现以下的错误:

ERROR: cannot download default sources list from:
https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/sources.list.d/20-default.list
Website may be down.

使用浏览器也打不开网址，笔记本上安装没有出现这个问题，台式机就…

解决方案：

sudo -E rosdep init
Wrote /etc/ros/rosdep/sources.list.d/20-default.list
Recommended: please run

    rosdep update

问题解决，早上更新还导致直接循环登录，(⊙v⊙)嗯