Database coded with Djs

require('dotenv').config();
const mysql = require('mysql2/promise');

module.exports = mysql.createConnection({
    host: 'localhost',
    user: 'sam',
    password: 'Virginia107',
    database: 'RVABot',
    waitForConnections: true,
    connectionLimit: 10,
    queueLimit: 0,
    maxIdle: 0, // Disable maxIdle - connections stay in the pool even if idle
    idleTimeout: 60000, // Close idle connections after 60 seconds (should be much less than MySQL's wait_timeout)
    enableKeepAlive: true // Enable TCP keep-alive packets
});

Error: Can't add new command when connection is in closed state