From c0850865a4263fc5827bdfb8243ca4ff0832a68e Mon Sep 17 00:00:00 2001
From: Kijin Sung <kijin@kijinsung.com>
Date: Sat, 7 Oct 2023 13:26:14 +0900
Subject: [PATCH] Fix undefined variable in Config::save()

---
 common/framework/Config.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/common/framework/Config.php b/common/framework/Config.php
index 63f25403a..0f2b76c9f 100644
--- a/common/framework/Config.php
+++ b/common/framework/Config.php
@@ -164,7 +164,10 @@ class Config
 		}
 
 		// Remove the backup file.
-		Storage::delete($backup_filename);
+		if (isset($backup_filename))
+		{
+			Storage::delete($backup_filename);
+		}
 
 		// Save XE-compatible config files.
 		$warning = '// THIS FILE IS NOT USED IN RHYMIX.' . "\n" . '// TO MODIFY SYSTEM CONFIGURATION, EDIT config.php INSTEAD.';