connect-restreamer issue: Error: write after end

Error: write after end

// https://github.com/dominictarr/connect-restreamer/issues/8

var express = require('express');
var app = module.exports = express();

var connectRestreamer = require('connect-restreamer');
var bodyParser = require('body-parser');

app.use(bodyParser.urlencoded({
    extended: true
}));
app.use(bodyParser.json());
app.use(connectRestreamer());

var proxy = require('http-proxy').createProxyServer({
    host: 'http://testwp',
    // port: 8983
});

app.use('/blog', function(req, res, next) {
    // req.url = req.url.slice(5);
    proxy.web(req, res, {
        target: 'http://testwp'
    }, next);
});

app.listen(80, function(){
    console.log('Listening!');
});