Warning message while running Flask

Question

While I am running Flask code from my command line, a warning is appearing:

Serving Flask app \"hello_flask\" (lazy loading)
* Environment: production
  WARN         


        

Answer 1

I was typing flask run and then saw this message after that I solve this issue with these:

1- Add this text in your myproject/.flaskenv :
FLASK_APP=myapp.py
FLASK_ENV=development
also you should type "pip3 install python-dotenv" for using this file .flaskenv

2-in your project folder type in terminal your flask command which one you use :
flask-3 run