Missing imports in model policies.
diff --git a/xos/model_policies/model_policy_Controller.py b/xos/model_policies/model_policy_Controller.py
index be31311..fa84be7 100644
--- a/xos/model_policies/model_policy_Controller.py
+++ b/xos/model_policies/model_policy_Controller.py
@@ -1,6 +1,6 @@
 
 def handle(controller):
-    from core.models import Controller, Site, ControllerSite, Slice, ControllerSlice, User, ControllerUser, ControllerImages, ControllerNetwork
+    from core.models import Controller, Site, ControllerSite, Slice, ControllerSlice, User, ControllerUser, ControllerImages, ControllerNetwork, Image, Network
     from collections import defaultdict
 
     # relations for all sites