我目前正尝试在我的express应用中使用parse server和express，但这是我第一次使用服务器，我无法理解渲染和路由是如何工作的。以下是我的代码：

const express = require("express");
const next = require("next");
const ParseServer = require('parse-server').ParseServer;
const path = require('path');

const PORT = process.env.PORT || 1338;
const dev = process.env.NODE_ENV !== "production";
const hostname = 'localhost'
const app = next({ dev, hostname, PORT });
const handle = app.getRequestHandler();

const databaseUri = 'mongodb+srv://';

if (!databaseUri) {
    console.log('DATABASE_URI not specified, falling back to localhost.');
  }

const config = {
  databaseURI: databaseUri || 'mongodb+srv://',
  cloud: process.env.CLOUD_CODE_MAIN || __dirname + '/cloud/main.js',
  appId: process.env.APP_ID || '',
  masterKey: process.env.MASTER_KEY || '', //Add your master key here. Keep it secret!
  serverURL: process.env.SERVER_URL || 'http://localhost:1338/parse', // Don't forget to change to https if needed
  liveQuery: {
    classNames: ['Posts', 'Comments'], // List of classes to support for query subscriptions
  },
};

app
  .prepare()
  .then(() => {
    const server = express();
    const showRoutes = require("./routes/index.js");

    server.use("/api", showRoutes(server));
    server.use('/pages', express.static(path.join(__dirname, '/pages')));

    const mountPath = process.env.PARSE_MOUNT || '/parse';

    const api = new ParseServer(config);
    server.use(mountPath, api);
    

    // server.get("*", (req, res) => {
    //   return handle(req, res);
    // });

    // server.get('/', function (req, res) {
    //     res.status(200).send('I dream of being a website.  Please star the parse-server repo on GitHub!');
    //   });

    server.get('/',function(req,res){
        return app.render(req, res, '/pages/index', req.query)
      });

    server.get('/test', function (req, res) {
        res.sendFile(path.join(__dirname, '/public/test.html'));
      });

    const httpServer = require('http').createServer(server);
    httpServer.listen(PORT, function () {
    console.log('parse-server-example running on port ' + PORT + '.');
    });

    ParseServer.createLiveQueryServer(httpServer);

    module.exports = {
        app,
        config,
      }
    }
  )

当我运行这段代码时，主页加载为空白，但是终端没有显示任何错误。我还在索引页中添加了render（）函数，但是它似乎不起作用。
如果有人能指出我所犯的任何设置错误，并解释我如何使用parse和express配置nextjs以正确路由/呈现，我将非常感激。
在网上很难找到关于以下设置的帮助，所以如果有人能指出任何示例github repos或学习材料，这将是非常有帮助的。
谢谢你！