update sync data from site dashboard and testing closing cycles

backend/apps/operations/views.py

@@ -206,10 +206,12 @@ class IotPanelViewSet(viewsets.ModelViewSet):
                 cycle = visible_cycles.get(pk=cycle_id)
             except Cycle.DoesNotExist:
                 return qs.none()
+            # Active cycles have end_date=None; date__lte=None raises ValueError (500).
+            end = cycle.end_date or cycle.soft_end_date()
             qs = qs.filter(
                 flock__kandang_id=cycle.kandang_id,
                 date__gte=cycle.start_date,
-                date__lte=cycle.end_date,
+                date__lte=end,
             )
         if params.get("flock_id"):
             qs = qs.filter(flock_id=params["flock_id"])