From 68a8d344899f68056c9c51dcbaa623cfbcb39f0c Mon Sep 17 00:00:00 2001
From: Dev <dev@dev.sp-tarkov.com>
Date: Tue, 10 Oct 2023 22:37:38 +0100
Subject: [PATCH] Protect against a missing upd object inside
 `changeItemStack()`

---
 project/src/helpers/QuestHelper.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/project/src/helpers/QuestHelper.ts b/project/src/helpers/QuestHelper.ts
index 3e34fa88..1b5c4c16 100644
--- a/project/src/helpers/QuestHelper.ts
+++ b/project/src/helpers/QuestHelper.ts
@@ -501,6 +501,10 @@ export class QuestHelper
         if (newStackSize > 0)
         {
             const item = pmcData.Inventory.items[inventoryItemIndex];
+            if (!item.upd)
+            {
+                item.upd = {};
+            }
             item.upd.StackObjectsCount = newStackSize;
 
             this.addItemStackSizeChangeIntoEventResponse(output, sessionID, item);