Unit 3, Issue with Gradebot


My package works perfectly when I run the code by ros2 launch but the Graderobot is saying that :

I have the subscriber for sure with callback function:

also the node name is topics_quiz_node in my launch file:


Please help me in this regard.


Hi @h90.rezaeifar

Did you trying to remove build, log and install before send to GradeBot? Usually works.

What is the output of ros2 node list, while launching your quiz package?

Thanks. Once, I changed the node name in my Python code to topics_node and forgot to return it to topics_quiz_node. Now it is working and I got 10/10.

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