Flask and Heroku - ModuleNotFoundError: No module named 'app'

Question

I\'m trying to deploy a Flask app to Heroku. After deploying, application crashes and I get an error ModuleNotFoundError: No module named \'app\'.

Project structure

Answer 1

In my case, this was resolved after I made the following changes, of course committing the changes before pushing to heroku:

1) ran pip freeze > requirements.txt,

2) moved my app.py to a different directory, and updated Procfile, manage.py -all files importing app.py- and to reflect the new location. I'm not sure if moving the file actually made a difference, it seems unlikely, but regardless, it's worth verifying all files that import app have the correct path