Unknown custom element did you register the component correctly

1、错误描述

vue.esm.js?efeb:591 [Vue warn]: Unknown custom element: <el-container> - did you register the component correctly? For recursive components, make sure to provide the "name" option.

found in

---> <Container> at src/components/Container.vue
       <App> at src/App.vue
         <Root>

2、错误原因

      没有在main.js文件中注册这个组件，导致出现了报错

3、解决办法

      在main.js中注册Container组件

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import ElementUI from 'element-ui'
import 'element-ui/lib/theme-chalk/index.css'
import App from './App'
import router from './router'
import Container from '@/components/Container';

Vue.config.productionTip = false
Vue.use(ElementUI)

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  components: { App,Container },
  template: '<App/>'
})