以为我没有访问任何外部网络请求，为什么Firebase错误显示未配置结算帐户

Question

我的代码很直接 我只是测试实时Firebase数据库操作

const functions = require("firebase-functions");
const admin = require('firebase-admin');
admin.initializeApp();
const firestore = admin.firestore();

export const helloWorld = functions.https.onRequest((request, response) => {

 response.send("Hello from rocon!");
});


export const create = functions.https.onRequest((request, response)=>{

return functions.database().ref('/accounts').push({name : "alex 2", email : 'rocon@gmail.com', msisdn : '01715998800'}).then((snapshot) => {
    // Redirect with 303 SEE OTHER to the URL of the pushed object in the Firebase console.
    return response.send(snapshot.ref.toString());
  });

 });

我没有找到计费帐户配置的理由。

请帮助。