build a project with vue scaffolding. After visiting the home page successfully in 8080, you want to continue to introduce the element-ui file, and the page reports an error (the error message is the following figure). I don"t know which side has gone wrong. The way to introduce it is to create a new test.vue under the components folder, paste the control code into it for a period of time, and then introduce it in app.vue, and main.js has also done the corresponding configuration
.import ElementUI from "element-ui"
import "element-ui/lib/theme-chalk/index.css"
Vue.use(ElementUI)