Vue Router + Laravel Routes

Hi. I have used vue-router for my static pages but I have a login page which route is defined in laravel routes. I try to access login page then click "Back" button in the browser, vue-router links doesn't recognized anymore. What should I do?

It says

NotFoundHttpException in RouteCollection.php line 161:

Here's my router.js

import Vue from 'vue'
import VueRouter from 'vue-router'

import Home from './components/Home.vue'
import About from './components/About.vue'
import OurMission from './components/Mission.vue'
import OurVision from './components/Vision.vue'
import Services from './components/Services.vue'
import ContactUs from './components/Contact.vue'
import Sidebar from './components/Sidebar.vue'

let routes=[
    {
        path:'/',
        component: Home 
    },
    {
        path:'/about-us',
        component: About 
    },
    {
        path:'/our-mission',
        component: OurMission 
    },
    {
        path:'/our-vision',
        component: OurVision 
    },
    {
        path:'/services',
        component: Services 
    },
    {
        path:'/contact-us',
        component: ContactUs 
    }
];


export default new VueRouter({
    hashbang: false,
    history: true,
    mode: 'history',
    routes
})