Missing import for disable_for_loaddate

coin/billing/models.py

@@ -22,7 +22,8 @@ from coin.offers.models import OfferSubscription
 from coin.members.models import Member
 from coin.html2pdf import render_as_pdf
 from coin.utils import private_files_storage, start_of_month, end_of_month, \
-                       postgresql_regexp, send_templated_email
+                       postgresql_regexp, send_templated_email,             \
+                       disable_for_loaddata
 from coin.isp_database.context_processors import branding
 from coin.isp_database.models import ISPInfo