enfrancais-app/src/router/index.js

import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from '../pages/Home.vue'

Vue.use(VueRouter)

const routes = [
  {
    name: 'home',
    path: '/',
    component: Home
  },
  {
    name: 'notfound',
    path: '/404',
    alias: '*',
    component: () => import(/* webpackChunkName: "404" */ '../pages/NotFound.vue')
  }
]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

export default router