Python module cannot open top schematic if pool/*.db* is missing

[jue89]

I try to create PDFs and Gerbers of my projects using GitHub Actions and the Horizon EDA Python module.

According to the .gitignore Horizon creates for new projects, the database files pool/*.db* don't become part of the GIT repo.

When opening the clean project with Horizon, these database files are recreated.

When opening the clean project with the python module it just crashes with the error message:

>>> prj.open_top_schematic()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OSError: unable to open database file

Am I doing things wrong?