PointRCNN问题，使用作者欲训练模型

使用命令python eval_rcnn.py --cfg_file cfgs/default.yaml --ckpt PointRCNN.pth --batch_size 1 --eval_mode rcnn --set RPN.LOC_XZ_FINE False时
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Traceback (most recent call last):
  File "eval_rcnn.py", line 865, in <module>
    cfg_from_file(args.cfg_file)
  File "/media/kim/My Passport/PointRCNN/tools/../lib/config.py", line 187, in cfg_from_file
    yaml_cfg = edict(yaml.load(f))
TypeError: load() missing 1 required positional argument: 'Loader'