https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/industry/express/business/express_search.html

📦 物流接口返回结果：

{

  "errcode": -1,

  "errmsg": "system error detail: [未知异常，请稍后重试] rid: 6936a303-27cb1663-23b2b5bf"

}

{'errcode': -1, 'errmsg': 'system error detail: [æ\x9cªç\x9f¥å¼\x82常ï¼\x8c请ç¨\x8då\x90\x8eé\x87\x8dè¯\x95] rid: 6936a303-27cb1663-23b2b5bf'}