item can be unavailable

pandora/itemlist/models.py

@@ -247,9 +247,10 @@ class List(models.Model):
             from item.models import Item
             qs = Item.objects.filter(public_id=i['item'])
             if qs.count() > 0:
-                frame = qs[0].frame(i['position'])
-                if frame:
-                    frames.append(frame)
+                if i.get('position'):
+                    frame = qs[0].frame(i['position'])
+                    if frame:
+                        frames.append(frame)
         self.icon.name = self.path('icon.jpg')
         icon = self.icon.path
         if frames: