Training Error about MapTRv2 with centerline

[VanHelen]

Hello，your great job is amazing！I have tried to train MapTRv2. When training without a centerline version, it is normal. I obtained results similar to your paper. However, when I tried the centerline version, it seems to have some problems, that the mAP of centerline is still zero. Just like the following figures:


And it seems that the gts of centerline is none. Is it a problem I encountered while generating data? I used "python tools/maptrv2/custom_nusc_map_converter.py --root-path ./data/nuscenes --out-dir ./data/nuscenes --extra-tag nuscenes --version v1.0 --canbus ./data " to generate the annotations.