Cannot GET / Node JS Amazon EC2 server issues - node.js

Question

In my app.js file
app.listen(process.env.PORT || 8080, () => console.log(`Listening on port ${process.env.PORT || 8080}!`));
In my webpack.config.js file
devServer: {
port: 3000,
open: true,
proxy: {
'/api': 'http://localhost:8080'
}
}
In /etc/nginx/sites-enabled/default on my EC2 instance
server {
listen 80;
server_name _;
location / {
proxy_pass http://[private ip]:8080;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
}
EDIT: Full app.js file
const app = express();
app.use(cors());
app.use(express.static('dist'));
app.listen(process.env.PORT || 8080, () => console.log(`Listening on port ${process.env.PORT || 8080}!`));
app.post('/api/[route]', async (req, res, next) => {
try {
const seq = await sequelize();
const file = await [...];
} catch (err) {
return next(err);
}
});

Answer 1

The correct config was
server {
listen 80;
server_name _;
location / {
proxy_pass http://localhost:8080;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
}
I believe i had installed pm2 incorrectly at the beginning, because both the nginx server and pm2 were trying to listen on port 80. So i did a fresh install of everything, and voila it works now.