i meet this proplem

[liuyang77712]

2021-11-01 17:08:15.495 | INFO | main:main:149 - Model Summary: Params: 99.07M, Gflops: 211.45
2021-11-01 17:08:16.556 | INFO | main:main:152 - loading checkpoint
Traceback (most recent call last):
File "demo/mot_demo.py", line 193, in
main(exp, args)
File "demo/mot_demo.py", line 153, in main
ckpt = torch.load(args.ckpt, map_location="cpu")
File "D:\tool\anaconda\envs\unitrack\lib\site-packages\torch\serialization.py", line 593, in load
return _legacy_load(opened_file, map_location, pickle_module, **pickle_load_args)
File "D:\tool\anaconda\envs\unitrack\lib\site-packages\torch\serialization.py", line 762, in _legacy_load
magic_number = pickle_module.load(f, **pickle_load_args)
_pickle.UnpicklingError: invalid load key, '\x00'.

[Zhongdao]

Hi @liuyang77712
I see that you seem to run the demo successfully, was this issue solved already?