title: Running Flask-SocketIO app on PythonAnywhere raises IOError
body: <p>I'm trying to run a chat app using Flask-SocketIO on PythonAnywhere.  Loading the page takes a long time or only partially loads and the chat doesn't work.  It works when I run it locally.  Why doesn't it work on PythonAnywhere?</p>
  
  <pre><code>2016-10-27 13:23:27,059 :IOError: write error
  2016-10-27 13:23:27,060 :Error running WSGI application
  Traceback (most recent call last):
    File "/bin/user_wsgi_wrapper.py", line 156, in __call__
      yield response
  GeneratorExit
  </code></pre>