Question about detection code

[Tao-Cute]

When i running detection code use dist_train.sh on my machine, TypeError: CascadeRCNN: fan_small_12_p4_hybrid: init() got an unexpected keyword argument 'default_cfg' was occur. My conda env use mmcv==1.3.0 and mmdet==2.11.0. I also try run install.sh and upgrade my mmcv version, the error was same. I wanna know why.