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app/Http/Controllers/api/Issue.php

@@ -28,7 +28,11 @@ class Issue extends BaseController
             $date = request()->input('date', null);
             if (!$date) $date = date("Y-m-d");
             $list = CaoHistory::where('date', $date)->get()->toArray();
-            if (count($list) > 0) $list = $list[0];
+            if (count($list) > 0) {
+                $list = $list[0];
+            } else {
+                $list = null;
+            }
 
 
         } catch (ValidationException $e) {