Compatbile version of gunicorn in python

Hi All,
My Python version is 3.12 and gunicorn version is 22.0.0. I’m trying to deploy to Az webapp services through Pipeline, it was successful but I didn’t get the expected output in domain url. I had checked the logs, got the error as ModuleNotFoundError: No module named ‘app’.
I had installed gunicorn and other dependencies, my gunicorn command is gunicorn app:app.
Pease let me know the solution for this.