The Problem:

The application fails to find the pyswisseph package. However, the build log for the deployment clearly shows it was successfully installed.

Proof of Successful Build: Please see the attached build log (logs.1759068121752.log). It shows the line Successfully installed ... pyswisseph-2.10.3.2.

Proof of Runtime Failure: Please see the attached deploy log (logs.1759068127756.log). It shows the application crashing with ModuleNotFoundError: No module named 'pyswisseph'.

We have also corrected the start command to be /app/.venv/bin/gunicorn... to ensure it uses the virtual environment, but the error persists.

This appears to be a platform-level bug where the final runtime image does not correctly reflect the successfully built environment. Could your engineering team please investigate this urgently?

Thank you.

Please send them this message. This evidence is very clear, and their team should be able to resolve this for you. I'm very interested to hear what they find.