contrain_op error when not using lct

[prodangp]

I am using the LTC network for my data and everything works fine. However, when I am trying to use LSTM, CTRNN or CTGRU, this error appears:

  File "seq.py", line 248, in fit
    if(len(self.constrain_op) > 0):
TypeError: object of type 'NoneType' has no len()

Do you have any idea why is this happening? Thank you in advance for your time.

[raminmh]

There is no file seq.py in our repository. Please provide a reference to a file that is included in the repo

[prodangp]

We use gesture.py for classyfing inputs with one feature (instead of 32) based on 4 classes

[mlech26l]

The file gesture.py does not contain the expression if(len(self.constrain_op) > 0):