调用接口：申请商户号授权 https://developers.weixin.qq.com/doc/oplatform/Third-party_Platforms/2.0/api/cloudbase/common/wxpayopenauth.html

返回结果：{"errcode":274003977,"errmsg":"system error. rid: 6233def5-4fe11c4d-55d1afaa"}

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