Torch Error: magic_number = pickle_module.load(f, **pickle_load_args) _pickle.UnpicklingError: invalid load key, 'v'

1

When I am trying to load a .pt file i am seeing the following error,

    str1='Dataset/ALL_feats_cgqa.pt'
    m = torch.load(str1)

the error is as follows,

  File "/home/Storage1/pythonCodeArea/train.py", line 21, in load_embeddings
    m = torch.load(str1)
  File "/home/.local/lib/python3.10/site-packages/torch/serialization.py", line 1040, in load
    return _legacy_load(opened_file, map_location, pickle_module, **pickle_load_args)
  File "/home/.local/lib/python3.10/site-packages/torch/serialization.py", line 1262, in _legacy_load
    magic_number = pickle_module.load(f, **pickle_load_args)
_pickle.UnpicklingError: invalid load key, 'v'.

I have no idea about this error. Any help will be highly appreciated.

I have gone through these references without any solution, [1], [2], [3], [4].