old_contents: from .base import *
  
  # SECURITY WARNING: don't run with debug turned on in production!
  DEBUG = False
  
  ALLOWED_HOSTS += ['fiblist.opsys.io']
new_contents: from .base import *
  
  DEBUG = False
  
  ALLOWED_HOSTS += ['fiblist.opsys.io']
subject: remove comment in production settings file.