AttributeError: 'ContrastiveSlotNamePredictor' object has no attribute 'smoothLoss'

[rollben]

I set use_contrastive_slotname_predictor: True and use_final_predictor: False, and run the script " python slu_main_debug.py --exp_name pclc --exp_id ap_0 --bidirection --freeze_emb --tgt_dm AddToPlaylist --n_samples 0 --tr --emb_file ./data/snips/emb/slu_word_char_embs_with_slotembs.npy"
however, the code error occurred,
File "E:\Project\joint_inent_slot\zero-shot\pcslot\src\slu\trainer_debug.py", line 67, in train_step
loss_slotname, slot_contrastive_loss= self.slotname_predictor(y_dm, lstm_hiddens, binary_golds=y_bin, final_golds=y_final)
File "D:\miniconda3\lib\site-packages\torch\nn\modules\module.py", line 1102, in _call_impl
return forward_call(*input, **kwargs)
File "E:\Project\joint_inent_slot\zero-shot\pcslot\src\slu\model_debug.py", line 498, in forward
loss_slotname += self.smoothLoss(pred_slotname_each_sample, gold_slotname_each_sample)
File "D:\miniconda3\lib\site-packages\torch\nn\modules\module.py", line 1177, in getattr
raise AttributeError("'{}' object has no attribute '{}'".format(
AttributeError: 'ContrastiveSlotNamePredictor' object has no attribute 'smoothLoss'

Does any wrong with the setting of code? Appreciated for responsed.