windows system:
original_keras_version = f.attrs[‘keras_version’].decode(‘utf8’)
1. error:

load_weights_from_hdf5_group
    original_keras_version = f.attrs['keras_version'].decode('utf8')

AttributeError: 'str' object has no attribute 'decode'

2. Cause analysis

When installing tensorflow, the default installed h5py is 3.1.0, and an error is reported because the TF you installed does not support an excessively high version of h5py

3. Solutions

1. Uninstall h5py3 Version 1.0, installing h5py2.0 Version 10.0.2. Restart the compiler

pip install h5py==2.10.0