Error streaming logs: A chunk passthru must yield an "isFirst()" chunk before any content chunk.
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	jnuche
	Apr 2 2026, 1:19 PM

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Today I saw these 3 times in prod &staging (out of >10 envs that I created):

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Related Changes in GitLab:

	Title	Reference	Author	Source Branch	Dest Branch
	lib/Patchdemo/Catalyst.php: Fix streamLogs timeout reconnect logic	repos/test-platform/catalyst/patchdemo!322	dancy	main-I96b03dc8841b2edc6d1a8133a5facd23419ac7af	main

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jnuche created this task.Apr 2 2026, 1:19 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptApr 2 2026, 1:19 PM

jnuche updated the task description. (Show Details)Apr 2 2026, 1:20 PM

Tagging in @jeena since she's been looking at the streaming logs recently

Similar stack trace from last week (now caught with the exception handler)—different, maybe useful, probably not:

Fatal error: Uncaught Symfony\Component\HttpClient\Exception\TimeoutException: Idle timeout reached for "https://api.catalyst.wmcloud.org/api/environments/5192/logs?stream=mediawiki/install-mediawiki". in /var/www/html/vendor/symfony/http-client/Chunk/ErrorChunk.php:62 Stack trace:
#0 /var/www/html/lib/Patchdemo/Catalyst.php(89): Symfony\Component\HttpClient\Chunk\ErrorChunk->isLast()
#1 /var/www/html/lib/Patchdemo/Catalyst.php(228): Patchdemo\Catalyst->Patchdemo\{closure}()
#2 /var/www/html/lib/Patchdemo/Catalyst.php(62): Patchdemo\Catalyst->withErr()
#3 /var/www/html/create.php(590): Patchdemo\Catalyst->streamLogs()
#4 {main} thrown in /var/www/html/vendor/symfony/http-client/Chunk/ErrorChunk.php on line 62

dancy subscribed.Apr 2 2026, 5:15 PM

thcipriani moved this task from Backlog to In progress on the Catalyst (Luka Ijo Pimeja Jan) board.Apr 2 2026, 5:31 PM

dancy opened https://gitlab.wikimedia.org/repos/test-platform/catalyst/patchdemo/-/merge_requests/322

lib/Patchdemo/Catalyst.php: Fix streamLogs timeout reconnect logic

dancy claimed this task.Apr 2 2026, 8:03 PM

dancy triaged this task as High priority.

dancy merged https://gitlab.wikimedia.org/repos/test-platform/catalyst/patchdemo/-/merge_requests/322

lib/Patchdemo/Catalyst.php: Fix streamLogs timeout reconnect logic