[Vuejs]-Vue-Router: Refresing(F5) current page

The issue is that you have { path: '*', redirect: '/' } as the first item in your routes array. According to the documentation:

When using asterisk routes, make sure to correctly order your routes so that asterisk ones are at the end.

This is because Vue Router searches through your list of routes in order and returns the first matching route. An asterisk is going to match any and all routes so, when you refresh the page, it returns the first route and redirects you to ‘/’.

Same problem here, but my route have no { path: '*', redirect: '/' }
Here is my code.

export const routes = [
    {
      path:'/login',
      component: login,
      name: 'home'
    },
    {
      path:'/',
      component: mainapp,
      name: 'mainapp',
      meta: {
                requiresAuth: true
            },
                children: [
            {
                path:'/dash',
                component: dashboard,
                name: 'dashboard'
            },
            {
                path:'/dept',
                component: dept,
                name: 'department'
            },
            {
                path: '/deptDetail',
                component: deptDetail,
                name: 'detail'
            },
            {
                path:'/hrd',
                component: HRD
            },
            {
                path:'/notify',
                component: notify
            },
            {
                path:'/device',
                component: device
            },
            {
                path:'/setup',
                component: setup,
                name: 'setup'
            },
            {
                path:'/scanArea',
                component: area,
            },
            {
                path:'/env',
                component: environment,
            },
            {
                path:'/record', /* debug page */
                component: record,
            },
            {
                path:'/redis', /* debug page */
                component: redis,
            },
            {
                path:'/permit',
                component: permit,
            },
            {
                path:'/app',
                component: app,
            }
        ]
    },
  ]