From 1a12448e0a027980da9a1a522f73fd99a4df7af5 Mon Sep 17 00:00:00 2001
From: Sascha Zander <sascha.zander@denkwerk.com>
Date: Thu, 23 Apr 2026 16:55:06 +0200
Subject: [PATCH] Make sure the $GLOBALS['TSFE'] is set before using it

---
 Classes/Driver/AmazonS3Driver.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Classes/Driver/AmazonS3Driver.php b/Classes/Driver/AmazonS3Driver.php
index 90a95948..0c43ba2b 100644
--- a/Classes/Driver/AmazonS3Driver.php
+++ b/Classes/Driver/AmazonS3Driver.php
@@ -1191,7 +1191,7 @@ protected function initializeSettings()
         $this->initializeBaseUrl();
         $this->initializeBaseFolder();
 
-        if ($this->compatibilityService->isFrontend() && (!isset(self::$settings['dnsPrefetch']) || self::$settings['dnsPrefetch'])) {
+        if (isset($GLOBALS['TSFE']) && $this->compatibilityService->isFrontend() && (!isset(self::$settings['dnsPrefetch']) || self::$settings['dnsPrefetch'])) {
             $GLOBALS['TSFE']->additionalHeaderData['ausDriverAmazonS3_dnsPrefetch'] = '<link rel="dns-prefetch" href="' . $this->baseUrl . '">';
         }
         return $this;