diff --git a/app/Models/Orders.php b/app/Models/Orders.php
index 22448eb..93a8cd5 100755
--- a/app/Models/Orders.php
+++ b/app/Models/Orders.php
@@ -339,7 +339,7 @@ class Orders extends SoftDeletesModel
             })->where("id", $this->id)->get();
         } else {
             //获取正在进行中的订单，即使已经到了截止日，只要状态是在进行中的都继续生成
-            $unGeneratedOrders = $this::whereIn("status", [self::STATUS_ONGOING])
+            $unGeneratedOrders = (new Orders())->whereIn("status", [self::STATUS_ONGOING])
                 ->whereRaw("DATEDIFF(`from_date`, now()) <= 0")
                 ->whereDoesntHave("orderItems", function ($query) {
                     $query->whereRaw("DATEDIFF(`service_date`, now()) = 0");