From a745aa500e79789af3a19fba12116dec700b64b9 Mon Sep 17 00:00:00 2001
From: Matthias <matthias.mair@oewf.org>
Date: Wed, 29 Dec 2021 03:02:43 +0100
Subject: [PATCH] replace must be str

---
 InvenTree/InvenTree/helpers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/InvenTree/InvenTree/helpers.py b/InvenTree/InvenTree/helpers.py
index e030d51abf..4848b49e33 100644
--- a/InvenTree/InvenTree/helpers.py
+++ b/InvenTree/InvenTree/helpers.py
@@ -424,7 +424,7 @@ def extract_serial_numbers(serials, expected_quantity, next_number: int):
 
     # fill in the next serial number into the serial
     if '~' in serials:
-        serials = serials.replace('~', next_number)
+        serials = serials.replace('~', str(next_number))
 
     groups = re.split("[\s,]+", serials)