Keras: Error while loading saved model

[pandeyp]

I am using Keras 2.2.4 with Tensorflow 1.14.0, Python 3.6.12. While loading model from architecture and json file as show below, I am getting error given below. Please help.

with open(model_architecture_file, 'r') as f: model = model_from_json(f.read()) model.load_weights(model_weights_file)

Stacktrace:

File "/home/hadoop/run_inference.py", line 58, in
model.load_weights(model_weights_file) ##Issue here!
File "/usr/local/lib64/python3.6/site-packages/keras/engine/saving.py", line 458, in load_wrapper
return load_function(args, *kwargs)
File "/usr/local/lib64/python3.6/site-packages/keras/engine/network.py", line 1217, in load_weights
f, self.layers, reshape=reshape)
File "/usr/local/lib64/python3.6/site-packages/keras/engine/saving.py", line 1145, in load_weights_from_hdf5_group
original_keras_version = f.attrs['keras_version'].decode('utf8')
AttributeError: 'str' object has no attribute 'decode'

[stephan-hof]

I had the same issue and was able to fix this by setting h5py < 3.0.0.
Looks like here was a 3.0 release of h5py recently where they changed how strings are stored/read.
https://docs.h5py.org/en/stable/whatsnew/3.0.html#what-s-new-in-h5py-3-0

Note: The h5py file I tried to load was wirtten with h5py version 2.10.0

[stephan-hof]

The keras built into tensorflow has the same issue:
https://github.com/tensorflow/tensorflow/issues/44467

[pandeyp]

Thanks Stephan. I was able to fix it by setting to a lower h5py version.

[sairohithpasham]

Thanks Stephan. I was able to fix it by setting to a lower h5py version.

hey, I have the same issue, can you tell me what command did you use in command prompt to set the h5py to lower versions?

[stephan-hof]

Depends on how you installed keras in the first place. Typically it is done via pip, so the command to downgrade is:
pip install 'h5py<3.0.0'