Problem with vue-router, not render my components and no errors - vuejs2

Question

js and have a problem to use vue-router, my component isn't rendered and console show no errors, follow my code:
router config (/router/index.js):
import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from '#/pages/Home/Home.vue'
import NewUser from '#/pages/NewUser/NewUser.vue'
Vue.use(VueRouter)
const routes = [
{ path: '/', component: Home.default },
{ path: '/NewUser', component: NewUser.default }
]
export default new VueRouter({
routes
})
main.js:
import Vue from 'vue'
import App from './App.vue'
import router from './router'
import 'primevue/resources/themes/nova-light/theme.css'
import 'primevue/resources/primevue.min.css'
import 'primeicons/primeicons.css'
import 'primeflex/primeflex.css'
import Vuelidate from 'vuelidate'
import Card from 'primevue/card'
import InputMask from 'primevue/inputmask'
import Button from 'primevue/button'
import Sidebar from 'primevue/sidebar'
import InputText from 'primevue/inputtext';
import Message from 'primevue/message';
Vue.config.productionTip = false
Vue.use(Vuelidate)
Vue.component('Card', Card)
Vue.component('InputMask', InputMask)
Vue.component('Button', Button)
Vue.component('Sidebar', Sidebar)
Vue.component('InputText', InputText)
Vue.component('Message', Message)
new Vue({
router: router,
render: h => h(App),
}).$mount('#app')
app.vue:
<template>
<Fragment id="app">
<Header />
<router-view />
<Footer />
</Fragment>
</template>
<script src="./App.js"></script>
<style src="./App.css"></style>
my router-links is in header component, follow the github repository with the projetc:
https://github.com/juniorjrjl/weblib-front
thank you
[edited]
link removede because i solved part of problem and finally get error message
[edited]
I remove a link because not generate error in a link and I finally get error message after remove '.default' in my routes
vue.runtime.esm.js?2b0e:619 [Vue warn]: Error in nextTick:
"NotFoundError: Failed to execute 'insertBefore' on 'Node': The node
before which the new node is to be inserted is not a child of this
node."
vue.runtime.esm.js?2b0e:1888 DOMException: Failed to execute
'insertBefore' on 'Node': The node before which the new node is to be
inserted is not a child of this node.
at HTMLBodyElement.n.insertBefore (webpack-
internal:///./node_modules/vue-fragment/dist/vue-
fragment.esm.js:5:1609)
at HTMLDivElement.e.insertBefore (webpack-
internal:///./node_modules/vue-fragment/dist/vue-
fragment.esm.js:5:1293)
at Object.insertBefore (webpack-
internal:///./node_modules/vue/dist/vue.runtime.esm.js:5699:14)
at insert (webpack-
internal:///./node_modules/vue/dist/vue.runtime.esm.js:6029:19)
at createComponent (webpack-
internal:///./node_modules/vue/dist/vue.runtime.esm.js:5976:9)
at createElm (webpack-
internal:///./node_modules/vue/dist/vue.runtime.esm.js:5915:9)
at updateChildren (webpack-
internal:///./node_modules/vue/dist/vue.runtime.esm.js:6206:11)
at patchVnode (webpack-
internal:///./node_modules/vue/dist/vue.runtime.esm.js:6309:29)
at VueComponent.patch [as __patch__] (webpack-
internal:///./node_modules/vue/dist/vue.runtime.esm.js:6472:9)
at VueComponent.Vue._update (webpack-
internal:///./node_modules/vue/dist/vue.runtime.esm.js:3942:19)

Answer 1

If you need to have a fallback route when the path does not match any component then do this.
const Foo = { template: "<div>foo</div>" };
const Bar = { template: "<div>bar</div>" };
const NotFound = { template: "<div>Page not found</div>" };
Vue.config.productionTip = false;
Vue.use(VueRouter);
const routes = [
{ path: "/NewUser", component: Bar },
{ path: "/", component: Foo },
{ path: "*", component: NotFound }
];
Working implementation attached.
If you want to create nested router-views then read on it here:
https://router.vuejs.org/guide/essentials/named-views.html#nested-named-views

Answer 2

Changing your route did the trick for me. For default routing the syntax is different (see more https://router.vuejs.org/guide/essentials/named-views.html#nested-named-views)
const routes = [
{ path: '/', component: Home },
{ path: '/NewUser', component: NewUser }
]