Unable to send data from Stripe webhook to Firebase database - node.js

Question

this is the webhook part
the payment is succeeding but it is not showing in firebase database
I have also tried different rules and payload code but it didn't work
this was the terminal command "stripe listen --forward-to localhost:3000/api/webhook"
these are the terminal responses
please check them also
webhook
import { buffer } from "micro";
import * as admin from 'firebase-admin'
//secure a connection to Firebase from backend
const serviceAccount = require('../../../permissions.jason');
const app = !admin.apps.length ? admin.initializeApp({
credential: admin.credential.cert(serviceAccount),
})
: admin.app();
// establish connection to stripe
const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY);
const endpointSecret = process.env.STRIPE_SIGNNING_SECRET;
if (typeof endpointSecret !== "string") {
console.error("Unexpected value for STRIPE_SIGNING_SECRET");
// potentially throw an error here
}
const fulfillOrder = async (session) => {
// console.log('Fulfilling order', session)
return app
.firestore()
.collection("user")
.doc(session.metadata.email)
.collection("orders")
.doc(session.id)
.set({
amount: session.amount_total / 100,
amount_shipping: session.amount_total_details.amount_shipping / 100,
images: JSON.parse(session.metadata.images),
timestamp: admin.firestore.FieldValue.serverTimestamp(),
})
.then(() => {
console.log(`success: order ${session.id} had been added to db`);
});
};
export default async (req, res) =>{
if(req.method === 'post'){
const requestBuffer = await buffer(req);
const payload = requestBuffer.toString();
const sig = req.headers["stripe-signatur"];
let event;
// verify that the event posted came from stripe
try{
const event= stripe.webhooks.constructEvent(
req.rawBody.toString(),
sig,
endpointSecret);
} catch (err) {
console.log('ERROR', err.message)
return res.status(400).send(`Webhook error: ${err.message}`)
}
//handle the checkout event
if (event.type === 'checkout.session.completed') {
const session = event.data.object;
//fulfill the order...
return fulfillOrder(session)
.then(() => res.status(200))
.catch((err) => res.status(400).send(`Webhook error: ${err.message}`));
}
}
};
export const config = {
api: {
bodyParser: false,
externalResolver: true,
},
};
firebase rules
rules_version = '2';
service cloud.firestore {
match /databases/{database}/documents {
match /{document=**} {
allow read, write: if
request.time < timestamp.date(2022, 5, 20);
}
}
}