We notice our bot(developed using actions-on-google sdk) show same response two times on some mobile devices - actions-on-google

Question

We are building Chat Bot project using Actions on google SDK, we often face
one issue while testing our Bot on console it always show one response, but
on mobile sometime it shows double response for same Bot request response.
Attached are screen shots for same Bot flow, one is on mobile and other is
using console, please guide us what is wrong with it, we monitor our code again and again it send only one response.
index.js
const express = require('express');
const bodyParser = require('body-parser');
const routes = require('./app/router/routes');
const app = express();
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
app.use(routes);
const PORT = 8080;
app.listen(PORT, () => {
console.log(`Server listening on port ${PORT}...`);
});
routes.js
const express = require('express');
const router = new express.Router();
const {app} = require('../controller/googleAssistantSample');
router.post('/test12543/gooogleWebhook', app);
module.exports = router;
googleAssistantSample.js
const {
conversation,
Simple,
Suggestion,
} = require('#assistant/conversation');
const app = conversation();
app.handle('mainMenu', (conv) => {
conv.add(new Simple({
speech: 'Please select Informasi for producing issue.',
text: 'Please select Informasi for producing issue.',
}));
conv.add(new Suggestion({
title: 'Informasi',
}));
});
app.handle('information', (conv) => {
conv.add(new Simple({
speech: 'Next please select Safe Banking for producing issue.',
text: 'Next please select Safe Banking for producing issue.',
}));
conv.add(new Suggestion({
title: 'Safe Banking',
}));
});
app.handle('safeInfo', (conv) => {
conv.add(new Simple({
speech: 'Please check issue.',
text: 'Please check issue.',
}));
});
module.exports = {
app,
};
package.json
{
"name": "test",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "node index.js",
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"dependencies": {
"#assistant/conversation": "^3.7.1",
"body-parser": "^1.19.0",
"express": "^4.17.1"
}
}
Testing on mobile image
Testing on Actions console image