Object matching query does not exist when try to delete object

Question

When I try to delete Comany (model) with related objects, I get strange exception: Object matching query does not exist when try to delete object

company =  Company.objects.get(id=request.GET.get('id'))
company.delete() //on this line

Could you please explain what could be issues, as django should delete related objects by default?

Answer 1

This error was because of using post_delete signal, it tried to access data that was already deleted and unaccessible.