AttributeError - 'Settings' object has no attribute 'mysetting'

I have created a 'mysetting' in one of my apps.

register = appsettings.register('mysettings')

I can change the appsettings/ for my settings, but when I restart django, I get the following error:

AttributeError - 'Settings' object has no attribute 'mysetting'
appsettings/settingsobj.py in update_from_db
app = getattr(self, setting.app)

The report points to appsettings/settingsobj.py and update_from_db; start by reproducing the failure after a Django restart and tracing the registered setting through that method. Confirm the intended setting name and registration path, then verify the database-backed setting loads without AttributeError after restart.

Written by the indexing model from the issue text.