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app/cxinv/model/ProductStock.php

@@ -47,7 +47,7 @@ class ProductStock extends Base
             $save=$product->save();
             if(!$save) throw new \Exception('库存修改失败');
         }else{
-            throw new \Exception('库存不足');
+            throw new \Exception('商品库存未找到'.$product_id);
         }
         return true;
     }