Проблема с запросом базы данных mySQL, размещенной в Cloud SQL, с помощью службы Google Run

const express = require("express");
const mysql = require("mysql");
const app = express();

//pool variable
const pool = mysql.createPool({
    user:'username',
    password:'password',
    database:'dbname',
    socketpath:'the instance name given by the instance info page',
});

app.use(express.json());
const port = process.env.PORT || 8080;
app.listen(port, () =>{
    console.info('oraigo rest api listening on port ${port}');
});

// function get to test on port 8080
app.get("/", async (req, res)=>{
    res.json({status:"mario!!"});
});

//app get function to get from db info
app.get("/:user", async (req, res)=>{
    const query = "SELECT * FROM User WHERE id_user=?";
    pool.query(query, [req.params.user], (error, results)=>{
        res.json(results);
        /*if (!results[0]){
            res.json({status:"not fuond"});
        }
        else{
            res.json({status:"ppp"});
        }*/
        //res.json({status:"siamo giusti"});
    });

});

{
    "name": "namename",
    "version": "1.0.0",
    "description": "info desc",
    "main": "index.js",
    "scripts": {
        "start": "node index.js"
    },
    "author": "Gigi",
    "license": "ISC",
    "dependencies": {
        "express": "^4.17.1",
        "mysql": "^2.18.1"
    }
}