runtime error

Traceback (most recent call last): File "/home/user/app/app.py", line 13, in <module> checkpoint = torch.load('ckpt.pt', map_location=device) File "/usr/local/lib/python3.10/site-packages/torch/serialization.py", line 815, in load return _legacy_load(opened_file, map_location, pickle_module, **pickle_load_args) File "/usr/local/lib/python3.10/site-packages/torch/serialization.py", line 1033, in _legacy_load magic_number = pickle_module.load(f, **pickle_load_args) _pickle.UnpicklingError: invalid load key, 'v'.

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