Excercise 4.1 does not accept the call

Course Support ROS Basics In 5 Days (Python)
1

ERROR: service [/execute_trajectory] responded with an error:
this the error what the shell give so i did not what to do

2

Can you paste the actual ERROR message?

3

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this happen when i launch the file lanch

4

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those two error is happened whenn i launch it and call

5

It looks like it can’t find the service package. Check with ‘roscd’ if you can find that specific package and that all spelling is correct.

6

thank you i will check it