API resolved without sending a response for /api/user, this may result in stalled requests. in Next JS API

Question

Here is my code in NEXT JS API. I'm currently using mysql on next js api

const pool = require('../../src/config/database')

export default function handler(req, res) {
    console.log(req.body.user)
    if (req.method == 'POST') {
        try {
            pool.query(
                `SELECT * FROM users WHERE email=?`,
                [req.body.user],
                async (error, results, fields) => {
                    console.log(results)
                    console.log(error)
                    await results ? res.status(200).send(results) : res.status(404).send({ success: false })
                }
            )
        } catch (err) {
            res.status(500).send('something went wrong!')
        }

    }
}