Vue SPA Refresh 404

import Vue from 'vue'
import Router from 'vue-router'
const home = () => import('../views/home.vue')
Vue.use(Router)
export default new Router({
  mode: 'history',
  base: '/xxx',
  routes: [
    {
      path: '*',
      component: notFound
    },
    {
      path: '/',
      name: 'home',
      component: home
    }
...

var express = require('express');
var history = require('connect-history-api-fallback');
var app = express();
var path = require('path');
app.use(express.static('dist'));
app.use(history({ verbose: true, index: '/' }));
app.get('/', (req, res) => {
  res.sendFile(path.resolve('./dist/xxx/index.html'));
});
// server
var server = app.listen('3002', (req, res) => {
  var host = server.address().address;
  var port = server.address().port;
  console.log('server is running .  http://%s:%s', host, port);
});