[Vue warn]: Error in render: "TypeError: Cannot read property 'matched' of undefined"

菜鸟级的错误,,,,
[Vue警告]:渲染错误:“TypeError:无法读取属性’匹配’的未定义”

[Vue warn]: Error in render: "TypeError: Cannot read property 'matched' of undefined"[Vue warn]: Error in render: "TypeError: Cannot read property 'matched' of undefined"
没有导出实例,当然匹配不上啊!!!!!!! 改成下面就好了

export default new VueRouter({
   routes: [
        {
            path:'/pf',
            component:Pf
        }
    ]
})

还有一种可能就是 vue实例中的 “参数名” 用错,必须是“router”才可以,否则也是匹配不上

new Vue({
  el: '#app',
  router,  (缩写)相当于 router: router
  render: h => h(App),
})