运行app.py时报错

[ADY4000]

报错信息：
Traceback (most recent call last): File "E:\python机器学习资料\chatbot-master\Chatbot-tensowflow2.0\Seq2seqchatbot\web\app.py", line 6, in <module> import execute File "E:\python机器学习资料\chatbot-master\Chatbot-tensowflow2.0\Seq2seqchatbot\execute.py", line 62, in <module> input_tensor, input_token, target_tensor, target_token = read_data(gConfig['seq_data']) File "E:\python机器学习资料\chatbot-master\Chatbot-tensowflow2.0\Seq2seqchatbot\execute.py", line 47, in read_data target_tensor = tf.keras.preprocessing.sequence.pad_sequences(target_tensor, maxlen=max_length_tar, File "D:\conda\lib\site-packages\keras\utils\data_utils.py", line 1041, in pad_sequences trunc = np.asarray(trunc, dtype=dtype) TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'

target_tensor type为list，内容一大串

[wenChingzhou]

怎么解决的呢