"Run cell" in notebook area not working, giving errors (code is running from python file)

Regarding this same exercise 3.2 in unit 3, did you know the Run Cell (for the left-most panel where the instructions/sample code is) gives an error. The code works when running from my python file, but not when clicking Run Cell. The following error output: Try it. Maybe something’s wrong on my end?

ImportErrorTraceback (most recent call last)
in ()
----> 1 from robot_control_class import RobotControl
3 robotcontrol = RobotControl()
5 def get_laser_values(a,b,c):

ImportError: No module named robot_control_class

Oh, no, let’s have a look at that…