Run these lines (Windows):
python -m venv venv (create a virtual environment, first time)
venv/Scripts/activate
pip install -r requirements.txt
python src/server.py
It should create a Flask server at port 8000. Run 127.0.0.1:8000 and you should see "Hello World".
You need an OpenAI API key. Use your own or ask for a .env file from the author. If you have your own key, create a .env file from root folder, then add a string named openapi_key with value as your key.
You also need an .aws folder. Ask the author for that.