AttributeError: 'ConfigDict' object has no attribute 'gpu_ids'

[talhaubaid]

I m following this link
https://github.com/open-mmlab/mmaction2/blob/master/configs/localization/bmn/README.md

while running this
(python tools/test.py C:\Users\ASDF\Desktop\mmaction2\configs\localization\bmn\bmn_400x100_2x8_9e_activitynet_feature.py C:\Users\ASDF\Desktop\mmaction2\configs\localization\bmn\bmn_400x100_9e_activitynet_feature_20200619-42a3b111.pth --eval AR@AN --out new_results.json)

command I am having following error

Traceback (most recent call last):
  File "tools/test.py", line 372, in <module>
    main()
  File "tools/test.py", line 357, in main
    outputs = inference_pytorch(args, cfg, distributed, data_loader)
  File "tools/test.py", line 162, in inference_pytorch
    model, default_device, default_args=dict(device_ids=cfg.gpu_ids))
  File "C:\Users\ASDF\anaconda3\envs\open-mmlab\lib\site-packages\mmcv\utils\config.py", line 519, in __getattr__
    return getattr(self._cfg_dict, name)
  File "C:\Users\ASDF\anaconda3\envs\open-mmlab\lib\site-packages\mmcv\utils\config.py", line 50, in __getattr__
    raise ex
AttributeError: 'ConfigDict' object has no attribute 'gpu_ids'