Excercise 4.1 can't launch node

So I was having trouble with exercise 4.1 and having it run at the end. It didn’t work so I deleted my custom code and just started to copy and paste from the solution, and that STILL doesn’t work. I am wondering, what am I doing wrong? Is there a bug?

exercise_4_1.py

(scrubbed :see_no_evil:)

my_robot_arm_demo.launch

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Hi @jor14012,
Did you make the exercise_4_1.py executable with ‘chmod +x’ ?

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Thank you, that was the problem. Thanks a lot!

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