Unable to launch unit dijkstra_demo in unit1

Course Support Path Planning Basics
1

Hi.I just started path planning course…When i launch

roslaunch unit1 dijkstra_demo.launch

I get this following error

[rospack] Error: package ‘kobuki_description’ not found
[librospack]: error while executing command

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2

Hello @sivaeinfo ,

I’ve seen that you have your ROS_PACKAGE_PATH wrong. Did yo change it by any means? You can fix it with the following command:

export ROS_PACKAGE_PATH="/home/user/catkin_ws/src:/home/simulations/public_sim_ws/src:/opt/ros/noetic/share"