Estoy tratando de ejecutar simultáneamente mi frontend React con mi backend Node, pero sigo recibiendo este error. He buscado en línea una solución, pero no he obtenido ninguna respuesta clara. ¿Cómo puedo solucionar este problema?

 (node:10084) [DEP_WEBPACK_DEV_SERVER_ON_AFTER_SETUP_MIDDLEWARE] DeprecationWarning: 'onAfterSetupMiddleware' option is deprecated. Please use the 'setupMiddlewares' option. [1] (Use `node --trace-deprecation ...` to show where the warning was created) [1] (node:10084) [DEP_WEBPACK_DEV_SERVER_ON_BEFORE_SETUP_MIDDLEWARE] DeprecationWarning: 'onBeforeSetupMiddleware' option is deprecated. Please use the 'setupMiddlewares' option. const express = require('express'); const app = express(); const path = require('path'); const http = require('http'); const bodyParser = require('body-parser'); // data parsing var urlencodedParser = bodyParser.urlencoded({ extended: false }) app.post('/contact', urlencodedParser, function(req, res){ console.log(req.body) res.render('contact', {qs: req.query}); let transporter = nodemailer.createTransport({ service: 'gmail', auth: { user: 'bojurier@gmail.com', // generated ethereal user pass: process.env.EMAIL_SECRET_PASS // generated ethereal password }, }); const mailOption = { name: req.body.name, from: req.body.email, to: 'bojurier@gmail.com', text: req.body.message } transporter.sendMail(mailOption, (error, info) =>{ if(error){ console.log(error) res.send('error') } else { console.log('Email sent: ' + info.response) res.send('Success') } }) }); const PORT = process.env.PORT || 5000; app.listen(PORT, () => console.log(`Server running on port ${PORT}`));