In the simple_line_follower_ros.launch file placed in
which has the following code:
<?xml version="1.0" ?> <launch> <include file="/opt/jderobot/share/jderobot/gazebo/launch/f1_1_simplecircuit.launch"> </include> </launch>
the file path mentioned here is not valid as
opt/jderobot/ has CustomRobots folder due to which if we roslaunch the exercise it throws the error.