芯片型号：J6 天工开物开发包 OpenExplorer 版本：3.5.0 天工开物开发包 docker镜像名称：openexplorer/ai_toolchain_ubuntu_22_j6_gpu:v3.5.0 复现OE文档中Centerpoint模型训练过程，根据OE文档-进阶内容-Horizon Torch Samples-示例说明-Centerpoint检测模型训练 执行命令
python3 tools/create_data.py --dataset nuscenes --root-dir ./tmp_data/nuscenes/lidar_seg/v1.0-mini --extra-tag nuscenes --out-dir tmp_nuscenes/lidar
时报错TypeError: 'NoneType' object is not subscriptable
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另外， 对于该参考示例的说明需要修改如下，否则执行python3 tools/create_data.py依然会有读取info["valid_flag"]失败。
