Seen on https://gerrit.wikimedia.org/r/c/mediawiki/extensions/PageTriage/+/902549 / https://integration.wikimedia.org/ci/job/quibble-vendor-mysql-php74-noselenium-docker/92005/console
06:51:00 There was 1 error: 06:51:00 06:51:00 1) SpecialPageFatalTest::testSpecialPageDoesNotFatal 06:51:00 Headers already sent, should send headers earlier than wfHttpError [Called from MediaWiki\Request\HeaderCallback::warnIfHeadersSent in /workspace/src/includes/Request/HeaderCallback.php at line 87] 06:51:00 06:51:00 /workspace/src/includes/debug/MWDebug.php:508 06:51:00 /workspace/src/includes/debug/MWDebug.php:198 06:51:00 /workspace/src/includes/Request/HeaderCallback.php:87 06:51:00 /workspace/src/includes/libs/HttpStatus.php:104 06:51:00 /workspace/src/includes/GlobalFunctions.php:1281 06:51:00 /workspace/src/includes/specials/SpecialRunJobs.php:66 06:51:00 /workspace/src/tests/phpunit/includes/specials/SpecialPageExecutor.php:117 06:51:00 /workspace/src/tests/phpunit/includes/specials/SpecialPageExecutor.php:46 06:51:00 /workspace/src/tests/phpunit/structure/SpecialPageFatalTest.php:40 06:51:00 /workspace/src/tests/phpunit/MediaWikiIntegrationTestCase.php:522
Blocking CI for PageTriage.