临时调整

app/admin/controller/Sale.php

@@ -2969,7 +2969,7 @@ class Sale extends Base
                 return error_show(1003, "未找到相关阶梯价格");
             }
 
-            $lastnum = max($origin['min_num'], $good['min_num']);
+            $lastnum = max($origin['min_num']??0, $good['min_num']);
             if ($sale_num < $lastnum) {
                 return error_show(1003, "商品不满足起订量{$lastnum}");
             }