TypeError: expected np.ndarray (got tuple)

[InguChoi]

My system environment is below

• virtual machine ubuntu 18.04 on windows
• miniconda
• python 3.9 version

I just copy and paste this minimalRL code in my workspace...
I can not execute the example code.

Thank you

[super-NOV-a]

I have met the same problem
I solved it by changing the initial structure:
after building
s = env.reset()
add
s = s[0]