During the upgrade process, settings.py was being overwritten with only the DATABASES
section preserved, causing loss of INSTALLED_APPS and other configurations. This resulted
in the 'aiScanner' app not being recognized after upgrade.
Fixed by:
- Improving the regex pattern to more accurately match only the DATABASES dictionary
- Adding re.DOTALL flag to handle multi-line DATABASES configuration
- Ensuring all other settings including INSTALLED_APPS are preserved during upgrade
This resolves the RuntimeError about aiScanner.status_models.ScanStatusUpdate not having
an explicit app_label.
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