moveit_tutorials: Cannot locate rosdep definition for [moveit_visual_tools]

安装moveit报错：

ERROR: the following packages/stacks could not have their rosdep keys resolved
to system dependencies:
moveit_tutorials: Cannot locate rosdep definition for [moveit_visual_tools]

解决方法就是，安装你缺少的包。比如我的报错是：

moveit_tutorials: Cannot locate rosdep definition for [moveit_visual_tools]，那我就是缺少moveit_visual_tools，所以我只要把joy安装一下就好啦。

在终端输入

sudo apt-get install ros-你的ROS版本-你缺少的东西

比如我这里我就输入

sudo apt-get install ros-kinetic-moveit-visual-tools

注意：这里一定要把下包名之间的划线“_”换成短线"-"