From 639ad7ad0622c945a2f554a7295ef5f46fd6a8d8 Mon Sep 17 00:00:00 2001
From: Kijin Sung <kijin@kijinsung.com>
Date: Fri, 6 Oct 2023 22:53:27 +0900
Subject: [PATCH] Fix passing null to strtoupper()

---
 common/framework/parsers/DBQueryParser.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/framework/parsers/DBQueryParser.php b/common/framework/parsers/DBQueryParser.php
index f5aaf169c..55b17df10 100644
--- a/common/framework/parsers/DBQueryParser.php
+++ b/common/framework/parsers/DBQueryParser.php
@@ -280,7 +280,7 @@ class DBQueryParser extends BaseParser
 			{
 				$group = new DBQuery\ConditionGroup;
 				$group->conditions = self::_parseConditions($tag);
-				$group->pipe = strtoupper($attribs['pipe'] ?? null) ?: 'AND';
+				$group->pipe = strtoupper($attribs['pipe'] ?? '') ?: 'AND';
 				$group->ifvar = $attribs['if'] ?? null;
 				$result[] = $group;
 			}