yolo5 执行 train.py 训练出错
问题:assert nf > 0 or not augment, f'{prefix}No labels found in {cache_path}, can not start training. {HELP_URL}’AssertionError: train: No labels found in D:\python-project\datasets\xxx\labels\train.cache, can not start training.
解决:将图片的格式从png转为jpg
