use'nuscenes v1.0-mini' as dataset and run create_data.py,encounter KeyError:'ann_info'

[alpacaduby]

I download and unzip nuscenes v1.0-mini,and run ' python tools/create_data.py nuscenes --root-path ./data/nuscenes --out-dir ./data/nuscenes --extra-tag nuscenes --version v1.0-mini ' to prepare the dataset,but an error comes:
File "tools/create_data.py", line 267, in
nuscenes_data_prep(
File "tools/create_data.py", line 89, in nuscenes_data_prep
create_groundtruth_database(dataset_name, root_path, info_prefix,
File "/home/xxx/BEVDet/tools/data_converter/create_gt_database.py", line 241, in create_groundtruth_database
example = dataset.pipeline(input_dict)
File "/home/xxx/BEVDet/mmdet3d/datasets/pipelines/compose.py", line 49, in call
data = t(data)
File "/home/xxx/BEVDet/mmdet3d/datasets/pipelines/loading.py", line 664, in call
results = self._load_bboxes_3d(results)
File "/home/xxx/BEVDet/mmdet3d/datasets/pipelines/loading.py", line 559, in _load_bboxes_3d
results['gt_bboxes_3d'] = results['ann_info']['gt_bboxes_3d']
KeyError: 'ann_info'
How to fix this problem?

[alpacaduby]

I used to run /BEVDet/tools/create_data.py,which result in this problem,but /mmdetection3d/tools/create_dara.py can generate the correspoding files.