How can I deploy this with my own computer and Raspberry Pis in LAN?

[luc-yang]

Hi, I found this repository very occasionally and I am very interested in it.
I have deploy this on a virtual machine to be the master. Some python package version problems have been solved.
Then, I run python master.py. And I got:

luc@VB:~/whereareyou$ python master.py
/home/luc/.local/lib/python2.7/site-packages/flask_cache/jinja2ext.py:33: ExtDeprecationWarning: Importing flask.ext.cache is deprecated, use flask_cache instead.
  from flask.ext.cache import make_template_fragment_key
 * Serving Flask app "app" (lazy loading)
 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: off
 * Running on https://0.0.0.0:5000/ (Press CTRL+C to quit)

Then I visited https://0.0.0.0:5000/ and got this.

Then I am stuck.

I want to deploy this with my own computer and Raspberry Pis in LAN without Internet. Could you please help me?