problem with automl._best_model()

[williamty]

I used this code to get best model's name before. but recently, I found I cannot use it to do the same thing on new models which are built these days. Why? Is there anything change? I'm sure new models are built in the same ways as before.

automl._best_model.get_name()
Traceback (most recent call last):
File "", line 1, in
AttributeError: 'NoneType' object has no attribute 'get_name'

[williamty]

I found that the problem is that one must run predict first to activate the model (I think).