ERROR: cannot launch node of type [ur5_inf3480/inf3480_move_robot]

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Hi, i follow exactly this guys package(https://github.com/jmiseikis/ur5_inf3480) in ROS indigo environment. After runing roslaunch ur5_inf3480 ur5_launch_inf3480.launch, the following error occurred in the terminal. It is the only error among all the lines. ERROR: cannot launch node of type [ur5_inf3480/inf3480_move_robot]: can't locate node [inf3480_move_robot] in package [ur5_inf3480].

But the ur5 did pop up in RVIZ and could be controlled through Joint State Publisher. I am wondering how to fix this error and how to make file inf3480_move_robot.cpp run to make the robot move according to this script. In short, I want to figure out how to run file nf3480_move_robot.cpp successfully in his package. Thank you so much.

The site for the package I followed: https://github.com/jmiseikis/ur5_inf3480