can't run main.py ,a wrong in keras_wrapper

[RookieCXL]

I need some help，when I run the main.py, an error happen in the keras_wrapper.

C:\Users\think>python C:\Users\think\Desktop\nmt-keras-master/main.py
Using TensorFlow backend.
[09/04/2019 11:48:58] <<< Cupy not available. Using numpy. >>>
[09/04/2019 11:48:59] Running training.
[09/04/2019 11:48:59] Building EuTrans_esen dataset
Traceback (most recent call last):
File "C:\Users\think\Desktop\nmt-keras-master/main.py", line 49, in
train_model(parameters, args.dataset)
File "C:\Users\think\Desktop\nmt-keras-master\nmt_keras\training.py", line 64, in train_model
dataset = build_dataset(params)
File "C:\Users\think\Desktop\nmt-keras-master\data_engine\prepare_data.py", line 151, in build_dataset
label_smoothing=params.get('LABEL_SMOOTHING', 0.))
File "c:\users\think\src\keras-wrapper\keras_wrapper\dataset.py", line 1270, in setOutput
bpe_codes=bpe_codes, separator=separator, use_unk_class=use_unk_class)
File "c:\users\think\src\keras-wrapper\keras_wrapper\dataset.py", line 1701, in preprocessTextFeatures
'It currently is: %s' % (str(annotations_list)))
Exception: Wrong type for "annotations_list". It must be a path to a text file with the sentences or a list of sentences. It currently is: examples/EuTrans//training.en