Heroku: ImportError: No module named site

Question

After some changes in my repo and deploy to heroku I am receiving the following error:

ImportError: No module named site

I not have idea what can cause the problem because I only change some Django templates in the last 2 commits.

Best Regards

Answer 1

Take a look at your Procfile. It should show something like this:

web: gunicorn site:app

Make sure site is the name of your app.

Answer 2

Heroku has an article for this: https://help.heroku.com/BWJ7QYTF/why-am-i-seeing-importerror-no-module-named-site-when-deploying-a-python-app

Updates to the Python buildpack mean that the PYTHONPATH and PYTHONHOME config vars being set on the app may introduce this issue.

Firstly, check if these are present with

heroku config

To fix the issue, you can unset them like so:

heroku config:unset PYTHONHOME -a appname

heroku config:unset PYTHONPATH -a appname