ubuntu@ip-172-31-35-203:~/Yoonsun$ python fan.app.py 

 * Serving Flask app 'fan.app'

 * Debug mode: on

WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.

 * Running on all addresses (0.0.0.0)

 * Running on http://127.0.0.1:5002

 * Running on http://172.31.35.203:5002

Press CTRL+C to quit

 * Restarting with stat

 * Debugger is active!

 * Debugger PIN: 142-514-459

요렇게.. 되었는데.. 해당 사이트가 열리지 않습니다.. ㅠ