hey @nbh,
A good way to identify a problem is to look the logs page (go to the homepage and select “what happened”)
because is so easy 
: just put your code in a notebook and run the notebook. You can also create ‘a primitive’ and run this via poppy monitor, but this is more complexe but …
Moreover, your main problem is that you can not instantiate your robot!
I think, you have unplug a picam ! If you have turn off this (in configure the robot) it’s good! But, it works only for the api (snap and monitor) and not for python!
two solution:
- plug your cam
- add camera=“dummy” when you instantiate your robot like :
poppy=PoppyErgoJr(camera="dummy")
If it still does not work, please give us the code error on the logs page.
If it work, please, give us a feedback
thank you.