Mysql is closing the connection on Ubuntu

I built a MERN app (used mysql instead of MongoDB) * I deployed it on the VPS (Ubuntu 24.04) * everything seems okay but when I try to check the logs of my backend using pm2 package it gives me kind of weird picture: first it gives me errors and then seems it is connected. * This is my db connection code

const mysql = require('mysql2');
    const dbHost = "127.0.0.1";
    const databaseConnection = () => {
      const db = mysql.createConnection({
        host: '127.0.0.1',
        user: 'Test',
        password: 'Iwillnottell', 
        database: 'Test',
      });
      db.connect(err => {
        if (err) throw err;
        console.log('MySQL Connected...');
      });
      return db; };
    module.exports = databaseConnection();