problem with roslaunch ExampleGroovyOrNewer.launch

[roseraven]

I have compiled the program,and when I enter "roslaunch ExampleGroovyOrNewer.launch",it didn't run,the following is part of the message.I don't know how to deal with it and I really need your help.

resolved = _resolve_args(resolved, context, resolve_anon, commands)

File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 383, in _resolve_args
resolved = commands[command](resolved, a, args, context)
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 151, in _find
source_path_to_packages=source_path_to_packages)
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/substitution_args.py", line 197, in _find_executable
full_path = _get_executable_path(rp.get_path(args[0]), path)
File "/usr/lib/python2.7/dist-packages/rospkg/rospack.py", line 203, in get_path
raise ResourceNotFound(name, ros_paths=self._ros_paths)
ResourceNotFound: ORB_SLAM
ROS path [0]=/opt/ros/kinetic/share/ros
ROS path [1]=/home/rosa/ORB_SLAM2/src
ROS path [2]=/opt/ros/kinetic/share
ROS path [3]=/home/rosa/orb_slam/src/ORB_SLAM-master