IOPO get_dataset ValueError: The dataset is not applicable in the current training stage.

[xiamaozi11]

File "/home/xia/patent/jiaodi/IOPO/Method-IOPO/src/llamafactory/train/iopo/workflow.py", line 44, in run_iopo
dataset_module = get_dataset(model_args, data_args, training_args, stage="iopo", **tokenizer_module)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/xia/patent/jiaodi/IOPO/Method-IOPO/src/llamafactory/data/loader.py", line 233, in get_dataset
dataset = _get_merged_dataset(data_args.dataset, model_args, data_args, training_args, stage)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/xia/patent/jiaodi/IOPO/Method-IOPO/src/llamafactory/data/loader.py", line 151, in _get_merged_dataset
raise ValueError("The dataset is not applicable in the current training stage.")
ValueError: The dataset is not applicable in the current training stage.