Services in ROS - cannot launch node of type [iri_wam_reproduce_trajectory

I was going through unit 5 and I might have deleted something, i’m not sure because when I tries running

roslaunch iri_wam_aff_demo start_demo.launch

i get an error. the error message is attached

That’s weird.

Not sure what you deleted, but should it happen again, you can just leave for 20 mins and come back. Everything would have been reset by then.

I can confirm that command is working fine.

By the way, welcome to the Community!

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Hi I came back to this topic to review services and i’m getting a similar problem

That’s strange. Did you create any package with the same name? This file should always be present on the VM unless removed.