Error when testing

[Hcz-up]

question:
when i input:python main.py --mode test --dataset CelebA --image_size 128 --c_dim 5 --selected_attrs Black_Hair Blond_Hair Brown_Hair Male Young --model_save_dir=stargan_celeba\models --result_dir=stargan_celeba\results
have a traceback:
Traceback (most recent call last):
File "main.py", line 115, in
main(config)
File "main.py", line 49, in main
solver.test()
File "C:\Users\HCZ\Desktop\stargan-master\solver.py", line 530, in test
self.restore_model(self.test_iters)
File "C:\Users\HCZ\Desktop\stargan-master\solver.py", line 107, in restore_model
self.G.load_state_dict(torch.load(G_path, map_location=lambda storage, loc:storage))
File "E:\language\python\lib\site-packages\torch\serialization.py", line 593, in load
return _legacy_load(opened_file, map_location, pickle_module, **pickle_load_args)
File "E:\language\python\lib\site-packages\torch\serialization.py", line 763, in _legacy_load
magic_number = pickle_module.load(f, **pickle_load_args)
_pickle.UnpicklingError: invalid load key, '?'.