router的path中把/doc写成doc时,app.vue的div显示不出来

const router = createRouter({
    history:history,
    routes: [
        {path:'',components:home},
        {path:'/doc',components:doc},
    ]
})

今天把/doc写成doc时整个routes居然全失灵了,app.vue的div居然显示不出来