Not getting data from firestore using firebase function

I created a firebase function to test how to get data from a firebase function. However, I am not able to get any data.

Note: I have another function that is listing all user from Authentication without any problem.

Here is my code:

import {onRequest} from "firebase-functions/v2/https";
import * as logger from "firebase-functions/logger";
import * as admin from "firebase-admin";

const serviceAccount = require('../serviceAccountKey.json');

// Initialize Firebase Admin SDK
admin.initializeApp({
    credential: admin.credential.cert(serviceAccount),
  });

const db = admin.firestore();

export const listUserProfiles = onRequest(async (request, response) => {    
    response.set('Access-Control-Allow-Origin', '*');

    try {
        const ref = db.collection("UserProfiles").doc("cnZbRQtnCnQ52kTbcxI6Zq7d3VA3");
        const docSnap = await ref.get();
        if (docSnap.exists) {
            console.log("Document data:", docSnap.data());
            response.status(200).json(docSnap.data());
        } else {
            console.log("No such UserProfiles!");
            response.status(200).json({});
        }
    }
    catch(error) {
        console.log('Error Getting profile:', error);
        response.status(500);
        response.statusMessage = `Error Getting profile: ${JSON.stringify(error)}`;
        response.send(error);
    }
        
})

When I hit the endpoint the log is showing No such UserProfiles!

I have a firestore rules that allow read for this collection.
I already checked the document cnZbRQtnCnQ52kTbcxI6Zq7d3VA3 and it is exists on the collection

Why I am not getting data?

I am expecting return the content of the document