AttributeError: 'NoneType' object has no attribute 'owd'

[xiang-xiang-zhu]

when I ran python main.py --config config/config.yaml

Traceback (most recent call last):
  File "main.py", line 36, in <module>
    main()
  File "main.py", line 22, in main
    config = FlyConfig.load()
  File "/home/hx/github项目/TorchFly/torchfly/flyconfig/flyconfig.py", line 189, in load
    config.runtime.owd = os.getcwd()
AttributeError: 'NoneType' object has no attribute 'owd'