Pretrained model works fine, but when I train the model on my machine, it gives error in test phase, any solution please??

[Saadiabatool]

When I trained the model on my machine, it does not detects any thing in test phase. gallery_detections.pkl file just contains nan values (no bounding box values)

[Saadiabatool]

issue was with pretrained model, redownloaded nd it worked.