web app does not load

[afshaanmaz]

I get 404 errors when launching server.py. The app seems to be running fine but does not appear on the browser
$export FLASK_APP=server.py
$flask run

* Serving Flask app "server.py" (lazy loading)
 * Environment: development
 * Debug mode: on
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 268-107-485
127.0.0.1 - - [23/Dec/2019 18:56:14] "GET / HTTP/1.1" 405 -

Also, I get the following 'connection refused' error when running request.py

requests.exceptions.ConnectionError: HTTPConnectionPool(host='localhost', port=5000): Max retries exceeded with url: /api/ (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x10c189f50>: Failed to establish a new connection: [Errno 61] Connection refused'))