Black Litterman efficient frontier Gamma Errror

[alpserbet]

ef = pyp.EfficientFrontier(bl_return_confi, S_bl_confi, weight_bounds=(0, 0.1), gamma=1)

gamma at the end is not working and gives error. I turn it to "0" but could be solved

[baobach]

Can you provide a specific error type? What is the message and how I can recreate the error? Also please specify the dependency versions. That could help