换成自己的数据集报错

[Kakaiero]

你好，我把数据集换成自己的就会这样报错，请问如何能够解决或者是什么原因呢？

    train(data, save_model_dir,dset_dir, seg)
  File "C:/Users/11/Desktop/Name-Entity-Recognition-master/Name-Entity-Recognition-master/fyz_lattice_NER/main.py", line 310, in train
    print("     Instance: %s; Time: %.2fs; loss: %.4f; acc: %s/%s=%.4f"%(end, temp_cost, sample_loss, right_token, whole_token，(right_token+0.)/whole_token))
ZeroDivisionError: float division by zero