接口：https://api.mch.weixin.qq.com/hk/v3/transactions/jsapi

body：

{"amount":{"currency":"HKD","total":100},"appid":"wxc6c5fba1a0a552e8","description":"JSAPI","mchid":"123854635","merchant_category_code":"5655","notify_url":"https://zn.qrit.cn/pay","out_trade_no":"121212","payer":{"openid":"11"},"trade_type":"NATIVE"}

Request-ID：

308a8324-12d2-5ba3-94b1-38d47d0ed9e2

返回的内容：

{"code":"PARAM_ERROR","message":"$key0$参数格式错误"}

这到底是什么问题啊，有没有人回答一下