多媒体内容安全识别接口，无法接受到微信的检测结果回调是为什么呢？
以下是 CURL 测试我方服务器是否正确处理接口响应的代码： curl -X POST https://yudingai.com/wechatcallback \
-H "Content-Type: application/json" \
-d '{
"ToUserName": "gh_9df7d78a1234",
"FromUserName": "o4_t144jTUSEoxydysUA2E234_tc",
"CreateTime": 1626959646,
"MsgType": "event",
"Event": "wxa_media_check",
"appid": "wx8f16a5be77871234",
"trace_id": "60f96f1d-3845297a-1976a3ae",
"version": 2,
"detail": [{
"strategy": "content_model",
"errcode": 0,
"suggest": "pass",
"label": 100,
"prob": 90
}],
"errcode": 0,
"errmsg": "ok",
"result": {
"suggest": "pass",
"label": 100
}
}'
因为选择是的明文模式，所以返回的是 success； 麻烦帮忙检查一下这个 trace_id:68495839-7e5f4458-02d7c64a，我方服务器并未接收到异步的检测结果回调，请问是什么原因呢？