Problem with topics quiz marking

[mpheng96]

The system says that I did not subscribe to /kobuki/laser/scan but I did and the robot works well, how do solve such issue?

[bayodesegun]

Hi @mpheng96,

Welcome to the Community!

Are you able to solve it yet? Could you check the instructions again, that everything was named as specified?

See a probably related problem:

Topics Quiz Grading Error

During the grading of my Topics Quiz, I missed points for “not subscribed to /kobuki/laser/scan”. Here is the breakdown of the marks: topics_quiz pkg found (mark: 1.0) Correctly publishing on /cmd_vel (mark: 4.0) ! Not subscribed to /kobuki/laser/scan (mark: 4.0) Avoid the obstacle correctly (mark: 7.0) My code: #! /usr/bin/python import rospy from geometry_msgs.msg import Twist from sensor_msgs.msg import LaserScan class Avoid_Wall: def __init__(self): # init node ros…