ResourceNotFound: hand_with_arm

When I continue to do the exercise 2.3 in Unit 2, I use the command “roslaunch hand_with_arm visualize_robot.launch.launch”, the terminal said “ResourceNotFound: hand_with_arm”, could you please help me to fix this problem?

The bug is in the roslaunch command given in the notes. It should be:

# Should not be roslaunch hand_with_arm visualize_robot.launch.launch
roslaunch hand_with_arm visualize_robot.launch

l have corrected that notebook. Sorry for the confusion.

Thank you very much~

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