keras-team/keras

Error while loading saved model

pandeyp opened this issue · 9 comments

pandeyp commented

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 commented

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

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stephan-hof commented

The keras built into tensorflow has the same issue:
tensorflow/tensorflow#44467

pandeyp commented

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

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sairohithpasham commented

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 commented

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'

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keshamin commented

The solution for me was not only to downgrade h5py lib, but also downgrade python version to 3.6.9 as per this answer on StackOverflow.

VirgilG72 commented

it works for me!

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'

it works for me!

microprediction commented

Has anyone got this solution to work on M1? I'm not able to downgrade h5py.

AlexDavydov357 commented

Solution:
Uninstall the original h5py module and install version 2.10. It's really helped me
pip install h5py==2.10 -i https://pypi.tuna.tsinghua.edu.cn/simple/

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