UnicodeDecodeError: 'utf-8' codec can't decode byte 0x9e in position 0: invalid start byte

I am facing this issue when I am trying to load a pre trained model in pytorch format. I am trying custom training using AVA dataset and using the below config.

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TRAIN: ENABLE: True DATASET: ava BATCH_SIZE: 8 EVAL_PERIOD: 5 CHECKPOINT_PERIOD: 1 AUTO_RESUME: True CHECKPOINT_FILE_PATH: /slowfast/configs/AVA/c2/SLOWFAST_32x2_R101_50_50.pkl' CHECKPOINT_TYPE: pytorch

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Below code is causing the issue. with pathmgr.open(path_to_checkpoint, "rb") as f: checkpoint = torch.load(f, map_location="cpu")

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Could any one suggest how to fix this?

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_Traceback (most recent call last): File "tools/run_net.py", line 45, in main() File "tools/run_net.py", line 26, in main launch_job(cfg=cfg, init_method=args.init_method, func=train) File "/slowfast/slowfast/utils/misc.py", line 311, in launch_job func(cfg=cfg) File "/slowfast/tools/train_net.py", line 611, in train checkpoint_epoch = cu.load_checkpoint( File /slowfast/slowfast/utils/checkpoint.py", line 301, in load_checkpoint checkpoint = torch.load(f, map_location="cpu") File "/anaconda/envs/env_actvity8/lib/python3.8/site-packages/torch/serialization.py", line 713, in load return _legacy_load(opened_file, map_location, pickle_module, **pickle_load_args) File "/anaconda/envs/env_actvity8/lib/python3.8/site-packages/torch/serialization.py", line 920, in legacy_load magic_number = pickle_module.load(f, **pickle_load_args) UnicodeDecodeError: 'utf-8' codec can't decode byte 0x9e in position 0: invalid start byte