API地址：https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/ministore/minishopopencomponent2/API/cat/get_children_cateogry.html

视频号小程序自定义交易组件及开放接口

小程序已经关联了视频号

调用接口返回48001，没有权限

{"errcode":48001,"errmsg":"api unauthorized rid: 650ba642-32c6f717-03002de9"}