Express API working locally but not in amplify - node.js

Question

I am new to amplify and I have a simple project where I send email from my backend with nodemailer and that email to a mailchimp list and everything was working fine locally but when I hosted it with aws amplify CLI. it showed it was successful but nothing actually happened
here is my code:
const express = require("express")
const EmailSender = require("./emailSender.js")
const client = require("mailchimp-marketing")
const bodyParser = require("body-parser")
const awsServerlessExpressMiddleware = require('aws-serverless-express/middleware')
// declare a new express app
const app = express()
app.use(bodyParser.json())
app.use(awsServerlessExpressMiddleware.eventContext())
// Enable CORS for all methods
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*")
res.header("Access-Control-Allow-Headers", "*")
next()
});
/**********************
* Example get method *
**********************/
app.get('/add', function(req, res) {
// Add your code here
console.log(req.body)
});
app.get('/add/*', function(req, res) {
// Add your code here
res.json({success: 'get call succeed!', url: req.url});
});
/****************************
* Example post method *
****************************/
app.post('/add', function(req, res) {
// Add your code here
try {
const { firstName, lastName,email,budget, message,company,country} = req.body
EmailSender({firstName, lastName,email,budget, message,company,country})
res.json({ msg: `Your message sent successfully` });
}
catch (error) {
res.status(404).json({ msg: "Error ❌" });
}
const client = require("mailchimp-marketing");
client.setConfig({
apiKey: "xxxx" ,
server: "xxx",
});
const run = async () => {
const response = await client.lists.addListMember("xxxxxx", {
email_address: req.body.email ,
merge_fields: {
FNAME: req.body.firstName,
LNAME: req.body.lastName
} ,
status: "subscribed",
});
console.log(response);
};
run().catch(errors => console.log(errors.response.text));
// catch(err) {
// console.log("erorr")
// }
console.log(req.body)
});
app.post('/add/*', function(req, res) {
// Add your code here
res.json({success: 'post call succeed!', url: req.url, body: req.body})
});
/****************************
* Example put method *
****************************/
app.put('/add', function(req, res) {
// Add your code here
res.json({success: 'put call succeed!', url: req.url, body: req.body})
});
app.put('/add/*', function(req, res) {
// Add your code here
res.json({success: 'put call succeed!', url: req.url, body: req.body})
});
/****************************
* Example delete method *
****************************/
app.delete('/add', function(req, res) {
// Add your code here
res.json({success: 'delete call succeed!', url: req.url});
});
app.delete('/add/*', function(req, res) {
// Add your code here
res.json({success: 'delete call succeed!', url: req.url});
});
app.listen(3000, function() {
console.log("App started")
});
// Export the app object. When executing the application local this does nothing. However,
// to port it to AWS Lambda we will create a wrapper around that will load the app from
// this file
module.exports = app
Please help
here is my cloudwatch console
enter image description here
Emailsender.js
const EmailSender = ({ firstName, lastName,email,budget, message,company,country }) => {
const sgMail = require('#sendgrid/mail')
sgMail.setApiKey("API_KEY")
const msg = {
to: 'email#gmail.com',
from: 'info#example.io',
subject: 'Sending with SendGrid is Fun',
text: 'and easy to do anywhere, even with Node.js',
html: `
<div>${firstName}<div/>
<div>${lastName}<div/>
<div>${email}<div/>
<div>${budget}<div/>
<div>${message}<div/>
<div>${company}<div/>
<div>${country}<div/>
` ,
}
sgMail
.send(msg)
.then((response) => {
console.log(response[0].statusCode)
console.log(response[0].headers)
})
.catch((error) => {
console.error(error)
})