启动运行.launch报错[robot_launch.launch] is neither a launch file in package nor is a launch file name

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完整的错误是：
[robot_launch.launch] is neither a launch file in package [kinova_gazebo] nor is [kinova_gazebo] a launch file name
The traceback for the exception was written to the log file
报错说明ros系统中，并没有安装相对应的package。在这种情况下，进入工程文件的最顶层，使用catkin_make命令对文件进行编译。如果此时再执行，还是会报错的，那么还要再加上一条语句：

source devel/setup.bash

将devel/setup.bash添加到系统，之后再运行就可以了。