webpack vue-loader was used without the corresponding plugin. Make sure to include VueLoaderPlugin

// webpack配置文件 

const path = require('path');

const htmlWebpackPlugin = require('html-webpack-plugin');

const VueLoaderPlugin = require('vue-loader/lib/plugin'); //引入这行

module.exports = {

    mode:'none',

    entry:'./src/main.js',

    output:{

        path:path.join(__dirname,'./dist'),

        filename:'bundle.js'

    },

    plugins:[

        new htmlWebpackPlugin({

            template:path.join(__dirname,'./src/index.html'),

            filename:'index.html'

        }),

         new VueLoaderPlugin() //new一个实例

    ],

    module:{

        rules:[

            {test:/\.css$/,use:['style-loader','css-loader']},

            {test:/\.less$/,use:['style-loader','css-loader','less-loader']},

            {test:/\.(jpg|png|bmp|gif|jpeg)$/,use:'url-loader'},

            {test:/\.js$/,use:'babel-loader',exclude:/node_modules/},

            {test:/\.vue$/,use:'vue-loader'}

        ]

    },

    resolve:{

        alias:{

            'vue$':'vue/dist/vue.js'

        }

    }

}