KeyError: "lmdb dataset does not have key b'256-02098'"

[rudransh2004]

on running the train.py script on my custom dataset, the code reflects a following error

KeyError: "lmdb dataset does not have key b'256-02098'"

[sunweilunformatech]

Got similar error:
KeyError: "lmdb dataset does not have key b'256-158666'"

[zzukong]

在我的自定义数据集上运行 train.py 脚本时，代码反映了以下错误

密钥错误：“lmdb 数据集没有密钥 b'256-02098'”

请问你解决了吗？