Vue.js vuejs 3:未捕获类型错误：对象（…）不是函数

我无法摆脱这个错误。 有人给我小费为什么

我在版本3中使用vuejs和路由器

未捕获的TypeError:对象（…）不是函数

npm运行服务

用2个警告编译的警告
在./src/router.js“中未找到导出“createRouter”中的警告 ./src/router.js“导出'createWebHistory'中的'vue router'警告 在“vue路由器”中找不到

router.js:

import { createWebHistory, createRouter } from "vue-router";
import UserSettings from "@/views/UserSettings.vue";
import UserEmailsSubscriptions from "@/views/UserEmailsSubscriptions.vue";
import UserProfile from "@/views/UserProfile.vue";
import UserProfilePreview from "@/views/UserProfilePreview.vue";
import Home from "@/views/Home.vue";
import About from "@/views/About.vue";
import Notfound from "@/views/Notfound.vue";

const routes = [
  { path: "/:catchAll(.*)", name: "Notfound", component: Notfound },
  {
    path: "/",
    name: "Home",
    component: Home,
  },
  {
    path: "/about",
    name: "About",
    component: About,
  },
  {
    path: "/settings",
    // You could also have named views at tho top
    component: UserSettings,
    children: [
      {
        path: "emails",
        component: UserEmailsSubscriptions,
      },
      {
        path: "profile",
        components: {
          default: UserProfile,
          helper: UserProfilePreview,
        },
      },
    ],
  },
];

const router = createRouter({
  history: createWebHistory(),
  routes,
});

export default router;

App.vue

<template>
  <h1>Nested Named Views</h1>
  <router-view />
</template>

<script lang="ts">
export default {
  name: 'App'
};
</script>

---

您需要将Vue路由器4与Vue 3一起使用

npm install vue-router@4

---

您需要将Vue路由器4与Vue 3一起使用

npm install vue-router@4