I am following the Firebase tutorial on how to implement Algolia with Firebase: https://firebase.google.com/docs/firestore/solutions/search

I am currently stuck on the indexing part of the tutorial as I have errors coming from the firebase cloud-functions logs.

The error is: TypeError [ERR_HTTP_INVALID_HEADER_VALUE]: Invalid value "undefined" for header "x-algolia-api-key"

How can I fix this error?

Here is my code

const functions = require('firebase-functions');



const algoliasearch = require("algoliasearch");



const ALGOLIA_ID = functions.config().algolia.app_id;

const ALGOLIA_ADMIN_KEY = functions.config().algolia.api_key;

const ALGOLIA_SEARCH_KEY = functions.config().algolia.search_key;



const ALGOLIA_INDEX_NAME = 'users';

const client = algoliasearch(ALGOLIA_ID, ALGOLIA_ADMIN_KEY);



// Update the search index every time a blog post is written.

exports.onUserCreated = functions.firestore.document('path').onCreate((snap, context) => {

    // Get the note document

    const user = snap.data();

  

    // Add an 'objectID' field which Algolia requires

    user.objectID = snap.id;

    console.log(user.objectID)

  

    // Write to the algolia index

    const index = client.initIndex(ALGOLIA_INDEX_NAME);

    return index.saveObject(user);

  });