mxnet加载模型 IndexError: list index out of range

    loading ['/data/user1/log/frvt/models/r34_webface_mask/siamese/siamese34-arcface-webfaceSiamese/model-0009.params']
    Traceback (most recent call last):
      File "train_0305.py", line 447, in <module>
    main()
      File "train_0305.py", line 443, in main
    train_net()
      File "train_0305.py", line 226, in train_net
    _, arg_params, aux_params = mx.model.load_checkpoint(vec[0], int(vec[1]))
    IndexError: list index out of range