AttributeError: ‘str‘ object has no attribute ‘decode‘ in keras when load model

错误是因为h5py的版本太高了导致的，降版本可以解决，例如

pip install h5py==2.10.0

For me the solution was downgrading the h5py package (in my case to 2.10.0), apparently putting back only Keras and Tensorflow to the correct versions was not enough.