yolov5训练单一类别报错

Traceback (most recent call last):
  File "train.py", line 541, in 
    train(hyp, opt, device, tb_writer)
  File "train.py", line 195, in train
    assert mlc < nc, 'Label class %g exceeds nc=%g in %s. Possible class labels are 0-%g' % (mlc, nc, opt.data, nc - 1)
AssertionError: Label class 1 exceeds nc=1 in data/coco128.yaml. Possible class labels are 0-0

删除 .cache缓存，这个应该是更换标签时缓存没有更新所以出问题了。

 

参考how to save :AssertionError: Label class 16 exceeds nc=1 in ../data.yaml. Possible class labels are 0-0 · Issue #1538 · ultralytics/yolov5 (github.com)