Problem with Swift env.step(dt) in the new version

[waelbachta]

Hi,

I am running the toolbox using an ubuntu 20.04 environment. When launching an example with swift, I get the following error :

File "demo.py", line 60, in
env.step(0.000001)
File "/home/wael/TP_NEW/venv/lib/python3.8/site-packages/swift/Swift.py", line 209, in step
obj._propogate_scene_tree()
AttributeError: 'NoneType' object has no attribute '_propogate_scene_tree'

Thank you for your help !

Wael.

[DevilCJS89]

The key words: AttributeError: 'NoneType' object has no attribute '_propogate_scene_tree'
you should chek your packages use"pip list "or "conda list"
rename the wrong file name
run again
if there are any question , I'll try my best to help you resolve it.