Ensure that ffmpeg is installed systemwide, this is required for handling audio files and tts.

FOR WINDOWS

winget install ffmpeg

FOR MACOS

homebrew install ffmpeg

FOR DEBIAN

sudo apt install ffmpeg

flask run

pip install -r requirements.txt

name of file: .flaskenv

PYTHONUNBUFFERED=1
FLASK_DEBUG=1
FLASK_APP=app.py
FLASK_ENV=development