AttributeError: 'MultiDiscrete' object has no attribute 'n'

[fatenlouati]

I tried to run simply_reference scenario but this error appeared.
AttributeError: 'MultiDiscrete' object has no attribute 'n'
How to fix it please

[fatenlouati]

Also class world didn't have attribute named collaborative

[fatenlouati]

the error occur in this line

Multi-Agent-Deep-Deterministic-Policy-Gradients/main.py

Line 23 in a3c294a

n_actions = env.action_space[0].n

[karrin-chen]

I've got the same problem just like you,do you know how to fix it?