How to visualize?

[hbsycym]

I run the demo.py by python demo.py --cfg_file /media/wdr/cym/LoGoNet-base/detection/tools/cfgs/det_model_cfgs/kitti/LoGoNet-kitti.yaml --data_path /media/wdr/cym/LoGoNet-base/detection/data/kitti/testing/velodyne/000000.bin --ckpt /media/wdr/cym/LoGoNet-base/checkpoint_epoch_40.pth

and output error:

2024-04-02 22:12:25,115 INFO -----------------Quick Demo of al3d-det-------------------------
Traceback (most recent call last):
File "demo.py", line 107, in
main()
File "demo.py", line 80, in main
root_path=Path(args.data_path), ext=args.ext, logger=logger
File "/home/cym/miniconda3/envs/multi3d/lib/python3.6/typing.py", line 1231, in new
return _generic_new(cls.next_in_mro, cls, *args, **kwds)
File "/home/cym/miniconda3/envs/multi3d/lib/python3.6/typing.py", line 1186, in _generic_new
return base_cls.new(cls)
TypeError: Can't instantiate abstract class DemoDataset with abstract methods get_infos_and_points, init_infos

how to solve?