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OSError When Loading TensorFlow Hub Model in Python

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I'm trying to load Vision Transformer (ViT) models from TensorFlow Hub using the hub.KerasLayer method. However, when I attempt to load the model, I encounter an OSError indicating that the URL does not appear to be a valid module. Below is the snippet of code where the error occurs, followed by the error message:

import tensorflow_hub as hubdef load_vit_model(model_name='B16'):    if model_name == 'B16':        model_url = 'https://tfhub.dev/google/vit_base_patch16_224/2'    elif model_name == 'B32':        model_url = 'https://tfhub.dev/google/vit_base_patch32_224/2'    else:        raise ValueError("Unsupported ViT model name")    model = hub.KerasLayer(model_url, trainable=False)     return model# Error when trying to load the modelmodels = [load_vit_model('B16'), load_vit_model('B32')] 

Error Message:

OSError: https://tfhub.dev/google/vit_base_patch16_224/2 does not appear to be a valid module.

Before this error, there are several warnings about deprecation and an indication of a tarfile.ReadError: invalid header, suggesting an issue with downloading or extracting the module.

Environment:

  • Python 3.12
  • TensorFlow 2.16.1
  • TensorFlow Hub
  • Windows 10

Attempts:

  • Checked for TensorFlow and TensorFlow Hub updates.
  • Attempted to clear the TensorFlow Hub cache.

How can I resolve this issue to successfully load the ViT models from TensorFlow Hub?


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