title: Express-Fileupload not parsing files in heroku
body: <p>I am using <code>express-fileupload</code> to parse the body of my request and access any files that are sent with the request. This works fine when I am trying to do this locally but when I push it to heroku, the files are not being parsed - instead <code>req.files</code> is <code>null</code>. My code is below:</p>
  
  <p>Parsing middleware: </p>
  
  <pre><code>var cookieParser = require('cookie-parser');
  var bodyParser = require('body-parser');
  const fileUpload = require('express-fileupload');
  
  module.exports = function (app) {
      app.use(cookieParser());
      app.use(bodyParser.json());
      app.use(bodyParser.urlencoded({ extended: true }));
      app.use(fileUpload());  // EXPRESS-FILEUPLOAD BEING USED HERE
  };
  </code></pre>
  
  <p>Routes file:</p>
  
  <pre><code>router.post('/photo', function(req, res, next) {
      console.log("INSIDE OF THE ROUTE =======&gt;&gt;&gt;&gt;&gt;");
      const userId = req.body.userId;
      const busketName = 'my-bucket-name';
      let newPhotosArray = [];
      var busboy = new Busboy({ headers: req.headers });
      req.pipe(busboy);
  
      busboy.on('finish', function() {
          const filesObj = req.files;
          console.log('FILES OBJ: ', filesObj);  // THIS IS LOGGED OUT AS NULL ON HEROKU - LOCALLY IT IS AN OBJECT WITH FILES
  
          // rest of code....
      });
  });
  </code></pre>
  
  <p>The code works great when I use it locally.  However, when I push the code to Heroku, req.files is null.  Why is this?</p>