error when loading the page in an app vue already published

I have an App Vue that uses vue-router, to publish it use the following:

CODE

var express = require('express');
var path = require('path');
var serveStatic = require('serve-static');

app = express();
app.use(serveStatic(__dirname + "/dist"));

var port = process.env.PORT || 5000;
app.listen(port);

console.log('server started '+ port);

This has already been published, but when I press f5 or I reload the page, I can not find the path or directory in the browser, forgive my ignorance but I need help: (