问驾驶证OCR识别,返回错误信息,但是错误代码在文档中没有找到？

驾驶证照片: http://biz-oss-dev.miaogoche.cn/zulin/bizImage/F_FC15302410810000000008_yase_1.jpg?Expires=4702864901&OSSAccessKeyId=LTAIFVdn88UX5oys&Signature=ErV1GoKd6qcKa8bRdei7JUFRQgM%3D ;

调用腾讯云驾驶证OCR识别接口,腾讯云返回信息:

{"code":-9502,"message":"BIZLICENSE_OCR_RECOG_FAILED","data":{"session_id":"1257321875-894241365","items":[]}} ;

在文档https://cloud.tencent.com/document/product/866/17599中未找到,

在文档https://cloud.tencent.com/document/product/866/17733中也未找到,

请问是什么原因?

谢谢.