From ab2b86539f5019b2c5bdb4a10deda1200b51a5ca Mon Sep 17 00:00:00 2001
From: Ted Bowman <ted+git@tedbow.com>
Date: Mon, 23 Oct 2023 17:11:23 -0400
Subject: [PATCH] fix batch response
---
.../Drupal/Core/EventSubscriber/FinishResponseSubscriber.php | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php
index 8dc9bac392ea..bbc92c8cc89e 100644
--- a/core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/FinishResponseSubscriber.php
@@ -307,7 +307,9 @@ protected function setExpiresNoCache(Response $response) {
*/
public function setContentLengthHeader(ResponseEvent $event): void {
$response = $event->getResponse();
- if ($response instanceof StreamedResponse) {
+ // @todo The batch system will break unless we check ob_get_level(). See
+ // https://drupal.org/i/3392196.
+ if ($response instanceof StreamedResponse || ob_get_level()) {
return;
}
--
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