Unknown custom element: <md-card>

[wyu-prc]

I used the global setting. The chrome console print
Chrome console
[Vue warn]: Unknown custom element: - did you register the component correctly? For recursive components, make sure to provide the "name" option.

main.js
import Vue from 'vue'
import router from './router'
import VueResource from 'vue-resource'
import vuexStore from './store/store'
import VueQuillEditor from 'vue-quill-editor'
import App from './App'

Vue.use(VueQuillEditor)

new Vue({
el: '#app',
router: router,
store: vuexStore,
template: '',
components: { App }
})

[surmon-china]

The <md-card> tag is used for example project, delete is will be work.