From 946a415896c24ea513081934fbc6789b7c39e889 Mon Sep 17 00:00:00 2001
From: sparkyx <danydb@noalyss.eu>
Date: Wed, 9 Aug 2023 13:09:55 +0200
Subject: [PATCH] PHP8.1 comptability deprecated null string

---
 include/class/card_property.class.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/class/card_property.class.php b/include/class/card_property.class.php
index 0b21956d4..7a30159c7 100644
--- a/include/class/card_property.class.php
+++ b/include/class/card_property.class.php
@@ -509,7 +509,7 @@ class Card_Property
                 // account
                 if ($value->ad_id==ATTR_DEF_ACCOUNT)
                 {
-                    $v=mb_strtoupper($value->av_text);
+                    $v=mb_strtoupper($value->av_text??"");
                     // 2 accounts given 
                     if (trim($v)!='')
                     {