diff --git a/ephios/modellogging/json.py b/ephios/modellogging/json.py
index cbdca4a51..f9bfcf624 100644
--- a/ephios/modellogging/json.py
+++ b/ephios/modellogging/json.py
@@ -59,6 +59,8 @@ def __init__(self, *args, **kargs):
     def custom_hook(self, d):
         if d.get("__model__") == "__queryset__":
             Model = ContentType.objects.get_for_id(d["contenttype_id"]).model_class()
+            if Model is None:
+                return d["strs"]
             objects = {obj.pk: obj for obj in Model._base_manager.filter(pk__in=d["pks"])}
             return [objects.get(pk, s) for pk, s in zip(d["pks"], d["strs"])]
         if d.get("__model__") == "__instance__":
diff --git a/ephios/modellogging/recorders.py b/ephios/modellogging/recorders.py
index dde656274..e01766c3f 100644
--- a/ephios/modellogging/recorders.py
+++ b/ephios/modellogging/recorders.py
@@ -240,7 +240,7 @@ def serialize(self, action_type: InstanceActionType):
     def deserialize(cls, data, model, action_type: InstanceActionType):
         try:
             self = cls(model._meta.get_field(data["field_name"]))
-        except FieldDoesNotExist:
+        except (AttributeError, FieldDoesNotExist):
             self = cls(None)
             self.label = data["verbose_name"]
         else: