Exam fails to grade, disconnects after 3 first grades

Hi @s325927 and @joubr13,

thank you very for pointing out these problems.

I’ve been investigating this issue and found the reason behind it.

To contextualize to newcomers, when @s325927 reported that the linux_exam_cmd pkg didn’t exist, I recommended downloading a repository that contains that package, and now, when you try to run the quiz, it fails because of a duplicated package.

That happens because the auto-correction system already defines this package, that is why a duplicated package is detected.

To solve this problem, you can just remove the linux_exam_cmd package you may have downloaded on ~/catkin_ws/src/linux_exam_cmd.

Even if when running rosrun linux_exam_cmd takeoff_drone.py you have:

user:~/catkin_ws$ rosrun linux_exam_cmd takeoff_drone.py
[rospack] Error: package 'linux_exam_cmd' not found

You can still submit the quiz anyway because as I mentioned, the auto-correction system already defines that package.

I know this is counter-intuitive, but we will soon install that linux_exam_cmd globally.

To summarize, please remove that linux_exam_cmd from your workspace and submit the quiz again, and let me know in case you identify any issue I may not have noticed.