router.push报错 about vue-router-tab HOT 4 CLOSED

<template>
<el-container>
    <el-aside style="width: auto;">
      <aside></aside>
    </el-aside>
    <el-main>
      <el-container>
        <el-header><header></header></el-header>
        <el-main><main /></el-main>
      </el-container>
    </el-main>
  </el-container>
</template>

// main.js
<template>
  <div>
    <!-- <router-view v-if="this.$route.path"></router-view>
	<router-tab v-else/> -->
<router-tab></router-tab>
  </div>
</template>

//header.js
...
<el-dropdown-menu slot="dropdown" style="line-height: 13px;position:absolute;top: 40px ">
								<el-dropdown-item command="logout">注销登录</el-dropdown-item>
							</el-dropdown-menu>
...
logout () {
      this.$router.push({ name: 'login', path: '/login' })
}

// router.js
export default [{
    path: '/login',
    component: login,
    name: 'login'
  }, {
    path: '/logout',
    redirect: 'login'
  }, {
    path: '/',
    redirect: 'login'
  },
 {
  path: '/sys',
  component: MainLayout,
  name: 'sys',
  children: [{
    path: '/',
    component: main,
    children: [
      ...RouterTabRoutes,
      {
        path: '/',
        redirect: 'Function'
      },
      {
        path: 'Function',
        component: Function,
        name: 'Function',
        meta: {
          title: '功能管理', // 页签标题
          icon: 'el-icon-setting', // 页签图标，可选
          aliveId: 'fullPath', // 路由打开页签规则，可选
          tabClass: 'basicColor'
        }
      },
]
...
},
  {
    path: '*',
    redirect: '404'
  }
]