模型加载问题

[Qi-Code]

作者你好，我再python eval.py的时候报错，报错内容如下：
Traceback (most recent call last):
File "eval.py", line 13, in
model = keras.models.load_model("best_model.h5")
File "C:\Users\YuQiCode\anaconda3\envs\tf2\lib\site-packages\tensorflow_core\python\keras\saving\save.py", line 146, in load_model
return hdf5_format.load_model_from_hdf5(filepath, custom_objects, compile)
File "C:\Users\YuQiCode\anaconda3\envs\tf2\lib\site-packages\tensorflow_core\python\keras\saving\hdf5_format.py", line 184, in load_model_from_hdf5
training_config, custom_objects))
File "C:\Users\YuQiCode\anaconda3\envs\tf2\lib\site-packages\tensorflow_core\python\keras\saving\saving_utils.py", line 235, in compile_args_from_training_config
sample_weight_mode = training_config['sample_weight_mode']
KeyError: 'sample_weight_mode'

请问是因为什么原因呀，是模型保存出问题了吗