Your First Robot with ROS

unit4: creating the motor driver
when i run (rosrun rosbots_description i get the following the error

{Traceback (most recent call last):
File “/home/user/catkin_ws/src/rosbots_description/scripts/”, line 5, in
from controller import Controller
ImportError: No module named controller}

i want to run it n gazebo but nothing happens and then i found this error

Hello @Mohammedd.elnadyy,

This Unit is supposed to be done on the real robot, having made all the setup steps described in the previous Unit (Unit 3). In Gazebo you would need to do extra steps that we have not tested.