From da457d965efd57caa63fe0c32bcfc47cc0c83277 Mon Sep 17 00:00:00 2001
From: Philipp Keck <git@philippkeck.de>
Date: Wed, 8 Dec 2021 21:29:42 +0100
Subject: [PATCH] Don't access uninitialized typed property
 ChromePhpHandler::$response

Fixes #44513
---
 src/Symfony/Bridge/Monolog/Handler/ChromePhpHandler.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Bridge/Monolog/Handler/ChromePhpHandler.php b/src/Symfony/Bridge/Monolog/Handler/ChromePhpHandler.php
index 059dc539e1681..1fa698a9390b6 100644
--- a/src/Symfony/Bridge/Monolog/Handler/ChromePhpHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/ChromePhpHandler.php
@@ -59,7 +59,7 @@ protected function sendHeader($header, $content): void
             return;
         }
 
-        if ($this->response) {
+        if (isset($this->response)) {
             $this->response->headers->set($header, $content);
         } else {
             $this->headers[$header] = $content;