nbeats - error

[raphaelcp]

The neabats modeol is returnig this error:

Traceback (most recent call last):
File "run_train.py", line 29, in
main()
File "run_train.py", line 24, in main
model.train(train_dataset, n_epochs=params['n_epochs'], mode='eager')
File "/home/rcp/Documents/dissertacao/Time-series-prediction/deepts/model.py", line 89, in train
self.build_model(training=True)
File "/home/rcp/Documents/dissertacao/Time-series-prediction/deepts/model.py", line 75, in build_model
Model = NBeatsNet(self.custom_model_params)
File "/home/rcp/Documents/dissertacao/Time-series-prediction/deepts/models/nbeats.py", line 40, in init
self.stacks.append(self.create_stack(stack_id))
File "/home/rcp/Documents/dissertacao/Time-series-prediction/deepts/models/nbeats.py", line 63, in create_stack
backcast_length,
NameError: name 'backcast_length' is not defined