相关疑难解决方法(0)

我正在尝试为Firebase Cloud Functions编写一个onCall函数，该函数在Firestore数据库上执行高级查询任务（即，根据AutoML自然lang检查文本查询以获取类别，等等），但是在尝试查询来自数据库的功能：

Error getting documents ::  Error: Could not load the default credentials. Browse to https://cloud.google.com/docs/authentication/getting-started for more information.
    at GoogleAuth.getApplicationDefaultAsync (/srv/node_modules/google-auth-library/build/src/auth/googleauth.js:161:19)
    at <anonymous>
    at process._tickDomainCallback (internal/process/next_tick.js:229:7)

功能：

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

exports.query = functions.https.onCall((data, context) => {
    const text = data.text;
    var results = [];
    const promise = db.collection('providers').get()
    promise.then((snapshot) => {
        console.log('marker');
        snapshot.forEach((doc) => {
            results.push({id: doc.id, data: doc.data()});
        });
        console.log('yessir');
        return {results: results};
    }).catch((err) => {
        console.log('Error …