Fix rider optimization issue when jo count for hub is 0 #589

src/Controller/AnalyticsController.php

@@ -466,6 +466,12 @@ class AnalyticsController extends Controller
             $ids[] = $jo['id'];
         }
 
+        // no jos, so no battery
+        if (count($ids) <= 0)
+        {
+            return 0;
+        }
+
         // ideally we encode the ids, but right now we're assuming they'll be int
         $in_text = implode(',', $ids);