old_contents: import factory
  
  
  class UCReportFactory(factory.DjangoModelFactory):
      rating = None
      last_updated = None
  
new_contents: import factory
  
  from ..models import UCRiskReport
  
  
  class UCReportFactory(factory.DjangoModelFactory):
      FACTORY_FOR = UCRiskReport
  
      rating = None
      last_updated = None
  
subject: Add FACTORY_FOR