About Trip loss

[517030910244]

My trp loss is always be 0.000

like this in loss.txt: epoch 20, rank-1 0.634021 , mAP 0.407872 Track ID loss : ['3.6117', '3.6115', '3.6115', '3.6114', '3.6113', '3.6112', '3.6112', '3.6111', '3.6111', '3.6111'] Trip Loss : ['0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000'] best epoch 30, rank-1 0.632302 , mAP 0.380513 Track ID loss : ['3.6111', '3.6111', '3.6111', '3.6111', '3.6111', '3.6111', '3.6111', '3.6110', '3.6110', '3.6110'] Trip Loss : ['0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000', '0.0000']

I can't solve that and I'd like to know why