No instances detected with soloV2

I tested GitHub - aim-uofa/AdelaiDet: AdelaiDet is an open source toolbox for multiple instance-level detection and recognition tasks. on my own dataset with respect to How to train Detectron2 with Custom COCO Datasets | by Chengwei Zhang | Medium but it predicts always 0 instances !! please help me !
Best regards

I would recommend to contact the authors of this repository/model, as your request is not easily actionable here.