Vue3 Cannot read properties of undefined (reading ‘use‘)

在用vue3脚手架搭建项目的时候，配置路由 一直报错，
错误代码不显示了
正确代码
min.js

import { createApp } from 'vue'
import App from './App.vue'
import Router from './router/index'


// createApp(App).use(Router).mount('#app')


const app = createApp(App)
app.use(Router)
// app.use(ElementPlus)
app.mount('#app')

router.js

import { createRouter, createWebHistory } from 'vue-router'
const routes = [
  {
    path: '/',
    name: 'index',
    component: () => import('../App.vue'),
    children: [
      {
        path: '/HelloWorld',
        name: 'HelloWorld',
        component: () => import('@/components/HelloWorld.vue')
      },
      {
        path: 'Shuju',
        name: 'Shuju',
        component: () => import('@/components/Shuju.vue')
      },
    ]
  }
]
const routerHistory = createWebHistory()
const router = createRouter({
  history: routerHistory,
  routes
})
export default router