[error reporting]: cannot read properties of undefined (reading 'prototype')

Report the wrong question

vue3.x Create project quote elementUI Console error As shown in the figure below ：

Error reporting analysis

element The official website said ：

Instance object is inconsistent , The instance object on the official website is vue/3.0（vue2.x） Version created object , And the project I created is using vue3.x Created , The example object is createdApp Instance object is inconsistent , Of course, it can't lead in , Then he reported an error

Error reporting solution

vue2.x

When creating a project, choose vue2.x Create project , Other operations as usual .（ element It's supporting vue2.x Of ,vue3.x Not for the time being ElementUI

vue3.x

Use vue3.x edition introduce ElementUI
If you want to use vue3.x introduce element It's not impossible , His support vue3.0 My version is called element-plus Click here to enter

install ：

npm install element-plus --save

Use ： stay main.js Write the following

import {
     createApp } from 'vue'
import ElementPlus from 'element-plus';
import 'element-plus/lib/theme-chalk/index.css';
import App from './App.vue';
 
const app = createApp(App)
app.use(ElementPlus)
app.mount('#app')