Traceback (most recent call last):



 "<ipython-input-14-8a076ee39a0a>", line 1, in <module>

len(res)

TypeError: object of type 'NoneType' has no len()

Traceback (most recent call last):


 "<stdin>", line 1, in <module>
TypeError: __init__() got an unexpected keyword argument 'outputs'
