When I train on Pascal VOC the result of mAP is 0

[PerthyChen]

when I trained on Pascal VOC SBD,i can train successufully(completely 12 epochs finished).But as the eval reslut comes out ,it shows that the [email protected] and [email protected] are both zero.Since the epoch is 12(most people trained on this epoch),i think is not the reason on peoch.There must be some other reason that occurs to this problem(may be be code problem). Your answer will be appreciated.Thanks.

[Nick198903]

Delete the cache，and re-run