When I do dataset preparation according to GETTING_STARTED.md and run commond python -m pcdet.datasets.kitti.kitti_dataset create_kitti_infos tools/cfgs/dataset_configs/kitti_dataset.yaml, the program crash with info"'EasyDict' object has no attribute 'DEPTH_MAP'". Finally I add DEPTH_MAP from CaDDN.yaml to kitti_dataset.yaml and it works, but I don't konw if it's correct.