Problem with using model se_resnext50

[cycyco]

When I use code pretrainedmodels.se_resnext50_32x4d(pretrained='imagenet') to download model se_resnext50, error comes up :

File "/home/xx/anaconda3/envs/torch37/lib/python3.7/site-packages/torch/serialization.py", line 764, in _legacy_load magic_number = pickle_module.load(f, **pickle_load_args) _pickle.UnpicklingError: invalid load key, '<'.

But when I tried other models such as se_resnext101,resnet ,there's no error. What goes wrong?