lack of image file

[SiHengHeHSH]

assert img_file.exists()
AttributeError: 'NoneType' object has no attribute 'exists'

run ‘python -m al3d_det.datasets.waymo.waymo_preprocess --cfg_file tools/cfgs/det_dataset_cfgs/waymo_xxx_sweeps_mm.yaml --func create_waymo_infos' and 'python -m al3d_det.datasets.waymo.waymo_preprocess --cfg_file tools/cfgs/det_dataset_cfgs/waymo_xxxx_sweeps_mm.yaml --func create_waymo_database'. There are
not the path of '../data/waymo/waymo_processed_data_v4/segment-9509506420470671704_4049_100_4069_100_with_camera_labels/image_0/0034.png' and '../data/waymo/waymo_processed_data_v4/segment-9509506420470671704_4049_100_4069_100_with_camera_labels/image*' What should I do? Thake you for your answer.