uni-id发送短信验证码失败提示错误代码50301

uni-id发送短信验证码失败，提示错误代码50301，使用如下代码：

const result = await uniID.sendSmsCode({  
    mobile: event["phone"],  
    templateId: "uni_sms_test",  
    type: "login"  
})  
console.log(result)

config.json中已填写secret和key，提示以下报错信息：

{"code":50301,"errCode":"uni-id-send-sms-code-failed","errMsg":"验证码发送失败","msg":"验证码发送失败","message":"验证码发送失败"}

后来参考下官方文档，发现mobile参数类型必须为：string

uni-id是什么：
https://uniapp.dcloud.io/uniCloud/uni-id.html