Keras version?

[deflorator1980]

I've got an error:

/python3.6/site-packages/keras/engine/saving.py", line 1009 [1004], in load_weights_from_hdf5_group
original_backend = f.attrs['backend'].decode('utf8')
AttributeError: 'str' object has no attribute 'decode'

After removing .decode('utf8') in this lines everything works fine.
Version of Keras - 2.2.4
May be it's necessary to use some other version?