我目前正在开始使用 ReactJs。但是，我在控制台中遇到了以下错误，但在终端中没有显示：

[WDS] Disconnected!sock.onclose @ client?64c0:70EventTarget.dispatchEvent @ eventtarget.js:49(匿名函数) @ main.js:356

抽象-xhr.js:128 GET http://127.0.0.0/sockjs-node/info?t=1461853324372 net::ERR_CONNECTION_TIMED_OUT

它正在寻找我在本地和全球安装的“sockjs-node”，但没有任何变化。不应该搜索“node_modules”文件夹吗？

这是我的配置：

var webpack = require("webpack");
var path = require("path");


module.exports = {

    devtool: "inline-source-map",
    entry: [
        "webpack-dev-server/client?http://127.0.0.0/",
        "webpack/hot/only-dev-server",
        "./src"
    ],
    devServer: {
        contentBase: "./public",
        hot: true,    
        inline: true,
        quiet: false,
        noInfo: true,
        stats: { colors: true }
    },
    output: {
        path: path.join(__dirname, "./public"),
        filename: "./assets/js/bundle.js"
    },
    resolve: {
        modulesDirectrories: ["node_modules", "src"],
        extentions: ["", ".js"]
    },
    module : {
        loaders: [
            { 
                test: /\.jsx?$/,
                exclude: "/node_modules/",
                loaders: ["react-hot-loader", "babel?presets[]=react,presets[]=es2015"] 
            }, 
            {
                test: /\.css$/,
                loader: "style-loader!css-loader"
            }, 
            {
                test: /\.gif$/,
                loader: "url-loader?mimetype=image/png"
            }, 
            {
                test: /\.woff(2)?(\?v=[0-9].[0-9].[0-9])?$/,
                loader: "url-loader?mimetype=application/font-woff"
            }, 
            {
                test: /\.(ttf|eot|svg)(\?v=[0-9].[0-9].[0-9])?$/,
                loader: "file-loader?name=[name].[ext]"
            }
        ]
    },
    plugins: [ 
        new webpack.HotModuleReplacementPlugin(),
        new webpack.NoErrorsPlugin(),
        new webpack.DefinePlugin({
            "process.env": {
                NODE_ENV: JSON.stringify("development")
            }
        })
    ]

}

任何帮助表示赞赏，并提前致谢。