媒体处理 HTTP CODE 403

{
     "id": " 6215616b53754e549a98ec616078c670 ",
     "state": " Fail ",
     "code": " Unknown ",
     "count": " 0 ",
     "message": " No body in response, http status code 403 ",
     "input": {
         "bucket": " surnamemuseum-media ",
         "location": " oss-cn-hangzhou ",
         "object": " museum_1v9891_video.mp4 "
    },
     "snapshotConfig": {
         "time": " 5 ",
         "width": " 200 ",
         "height": " 200 ",
         "frameType": " intra ",
         "outputFile": {
             "bucket": " surnamemuseum-media-videoimageout ",
             "location": " oss-cn-hangzhou ",
             "object": " test.jpg "
        }
    },
     "mNSMessageResult": {}
}这个一个视频截图提交请求，这是什么情况？状态“失败”，错误“未知”。这让我们从哪里去找错？