1. Check the torchvision version (can be checked through pip list or conda list)
2. If toechvision >= 0.4, you need to from torchvision.models.utils import load_state_dict_from_urlchange it to from torch.hub import load_state_dict_from_url. (This is the problem I had and solved it this way)
3. If toechvision <0.4, please check other issues
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