From 79ea6b507648186af1b9700b76c17cb0c5cba5c9 Mon Sep 17 00:00:00 2001
From: 18942506660 <18942506660@A18942506660>
Date: Mon, 4 Dec 2023 11:06:22 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8Dbug?=
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---
 src/WMS.Web.Repositories/SerialNumbersRepositories.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/WMS.Web.Repositories/SerialNumbersRepositories.cs b/src/WMS.Web.Repositories/SerialNumbersRepositories.cs
index 954c59cd..2d169fdc 100644
--- a/src/WMS.Web.Repositories/SerialNumbersRepositories.cs
+++ b/src/WMS.Web.Repositories/SerialNumbersRepositories.cs
@@ -153,7 +153,7 @@ namespace WMS.Web.Repositories
                 .GroupJoin(_context.BoxInventory, serial => serial.BoxId, box => box.BoxId, (serial, box) => new { serial, box })
                 .SelectMany(x => x.box.DefaultIfEmpty(), (p, box) => new { p.serial, box })
                 .FirstOrDefaultAsync(w => serialNumber.Equals(w.serial.SerialNumber));
-            if (entity.serial == null) return null;
+            if (entity == null || entity.serial == null) return null;
             response.BoxId = entity.serial.BoxId;
             response.SubStockId = entity.box?.SubStockId ?? 0;
             response.SerialNumber = entity.serial.SerialNumber;