I encountered an error when training the model with the Kitti dataset.

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File "/home/shiying/zjx/envs/anaconda3/envs/mmdet/lib/python3.8/site-packages/mmcv/utils/registry.py", line 61, in build_from_cfg raise KeyError( KeyError: 'KittiDataset is not in the dataset registry'

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Traceback (most recent call last):
File "tools/train.py", line 255, in
main()
File "tools/train.py", line 244, in main
train_detector(
File "/home/shiying/zjx/envs/anaconda3/envs/mmdet/lib/python3.8/site-packages/mmdet/apis/train.py", line 223, in train_detector
val_dataset = build_dataset(cfg.data.val, dict(test_mode=True))
File "/home/shiying/zjx/envs/anaconda3/envs/mmdet/lib/python3.8/site-packages/mmdet/datasets/builder.py", line 82, in build_dataset
dataset = build_from_cfg(cfg, DATASETS, default_args)
File "/home/shiying/zjx/envs/anaconda3/envs/mmdet/lib/python3.8/site-packages/mmcv/utils/registry.py", line 61, in build_from_cfg
raise KeyError(
KeyError: 'KittiDataset is not in the dataset registry'