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MediaWiki\Extension\WikiLambda\ActionAPI\WikiLambdaApiBase::getResponseEnvelope failed to execute, server response not wellformed: {exception}
Closed, ResolvedPublicPRODUCTION ERROR
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Description

Error
  • mwversion: 1.46.0-wmf.11
  • timestamp: 2026-01-14T23:48:43.035Z
  • phpversion: 8.3.29
  • reqId: 75831058-4779-4a95-a764-2169e878e47b
  • Find reqId in Logstash
normalized_message
MediaWiki\Extension\WikiLambda\ActionAPI\WikiLambdaApiBase::getResponseEnvelope failed to execute, server response not wellformed: {exception}
FrameLocationCall
from/srv/mediawiki/php-1.46.0-wmf.11/extensions/WikiLambda/includes/ZObjectFactory.php(505)
#0/srv/mediawiki/php-1.46.0-wmf.11/extensions/WikiLambda/includes/ZObjectFactory.php(299)MediaWiki\Extension\WikiLambda\ZObjectFactory::extractObjectType(stdClass)
#1/srv/mediawiki/php-1.46.0-wmf.11/extensions/WikiLambda/includes/ActionAPI/WikiLambdaApiBase.php(467)MediaWiki\Extension\WikiLambda\ZObjectFactory::create(stdClass)
#2/srv/mediawiki/php-1.46.0-wmf.11/extensions/WikiLambda/includes/ActionAPI/ApiPerformTest.php(340)MediaWiki\Extension\WikiLambda\ActionAPI\WikiLambdaApiBase->getResponseEnvelope(string, string)
#3/srv/mediawiki/php-1.46.0-wmf.11/extensions/WikiLambda/includes/ActionAPI/WikiLambdaApiBase.php(103)MediaWiki\Extension\WikiLambda\ActionAPI\ApiPerformTest->run()
#4/srv/mediawiki/php-1.46.0-wmf.11/includes/Api/ApiMain.php(2061)MediaWiki\Extension\WikiLambda\ActionAPI\WikiLambdaApiBase->execute()
#5/srv/mediawiki/php-1.46.0-wmf.11/includes/Api/ApiMain.php(964)MediaWiki\Api\ApiMain->executeAction()
#6/srv/mediawiki/php-1.46.0-wmf.11/includes/Api/ApiMain.php(935)MediaWiki\Api\ApiMain->executeActionWithErrorHandling()
#7/srv/mediawiki/php-1.46.0-wmf.11/includes/Api/ApiEntryPoint.php(138)MediaWiki\Api\ApiMain->execute()
#8/srv/mediawiki/php-1.46.0-wmf.11/includes/MediaWikiEntryPoint.php(181)MediaWiki\Api\ApiEntryPoint->execute()
#9/srv/mediawiki/php-1.46.0-wmf.11/api.php(30)MediaWiki\MediaWikiEntryPoint->run()
#10/srv/mediawiki/w/api.php(3)require(string)
#11{main}
Impact
Notes
  • the errors show different wmf vesrions:

context_api_client_useragent MediaWiki-JS/1.46.0-wmf.10

mwversion 1.46.0-wmf.11

Details

Request URL
https://www.wikifunctions.org/w/api.php?action=*&format=*&formatversion=*&uselang=*&wikilambda_perform_test_zfunction=*&wikilambda_perform_test_zimplementations=*&wikilambda_perform_test_ztesters=*
Related Changes in Gerrit:
SubjectAuthorRepoBranchLines +/-
Fix HTTP status code for disabled repo modeAkaza24mediawiki/extensions/WikiLambdamaster+3 -9
WikiLambdaApiBase::getResponseEnvelope: Don't try to process non-ZObjectsJforrestermediawiki/extensions/WikiLambdamaster+24 -1
Customize query in gerrit

Event Timeline

Etonkovidova created this task.Jan 15 2026, 11:25 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptJan 15 2026, 11:25 PM
Maintenance_bot added a project: Abstract Wikipedia team.Jan 15 2026, 11:30 PM
gerritbot added a comment.Jan 16 2026, 9:37 AM

Change #1227719 had a related patch set uploaded (by Akaza24; author: Akaza24):

[mediawiki/extensions/WikiLambda@master] Fix exception logging in WikiLambdaApiBase

https://gerrit.wikimedia.org/r/1227719

gerritbot added a project: Patch-For-Review.Jan 16 2026, 9:37 AM
Jdforrester-WMF triaged this task as Medium priority.Jan 21 2026, 6:32 PM
Jdforrester-WMF moved this task from To Triage to Bugs to investigate on the Abstract Wikipedia team board.
Jdforrester-WMF added a subscriber: DSantamaria.
gerritbot added a comment.Jan 26 2026, 5:48 PM

Change #1233226 had a related patch set uploaded (by Jforrester; author: Jforrester):

[mediawiki/extensions/WikiLambda@master] WikiLambdaApiBase::getResponseEnvelope: Don't try to process non-ZObjects

https://gerrit.wikimedia.org/r/1233226

Jdforrester-WMF changed the task status from Open to In Progress.Jan 26 2026, 5:48 PM
Jdforrester-WMF claimed this task.
Jdforrester-WMF edited projects, added: Abstract Wikipedia team (26Q3 (Jan–Mar)); removed: Abstract Wikipedia team.
Jdforrester-WMF moved this task from Incoming to In Code review on the Abstract Wikipedia team (26Q3 (Jan–Mar)) board.
Jdforrester-WMF added a project: Essential-Work.
brennen moved this task from Untriaged to Jan–Mar 2026 on the Wikimedia-production-error board.Jan 29 2026, 4:34 PM
gerritbot added a comment.Feb 10 2026, 12:40 PM

Change #1233226 merged by jenkins-bot:

[mediawiki/extensions/WikiLambda@master] WikiLambdaApiBase::getResponseEnvelope: Don't try to process non-ZObjects

https://gerrit.wikimedia.org/r/1233226

Jdforrester-WMF moved this task from In Code review to Ready to deploy on the Abstract Wikipedia team (26Q3 (Jan–Mar)) board.Feb 10 2026, 12:40 PM
ReleaseTaggerBot added a project: MW-1.46-notes (1.46.0-wmf.16; 2026-02-17).Feb 10 2026, 1:00 PM
gerritbot added a comment.Feb 17 2026, 4:33 AM

Change #1227719 abandoned by Akaza24:

[mediawiki/extensions/WikiLambda@master] Fix HTTP status code for disabled repo mode

Reason:

Task already by another author !

https://gerrit.wikimedia.org/r/1227719

Maintenance_bot removed a project: Patch-For-Review.Feb 17 2026, 5:30 AM
Jdforrester-WMF moved this task from Ready to deploy to Needs Sign-off on the Abstract Wikipedia team (26Q3 (Jan–Mar)) board.Feb 18 2026, 11:02 PM
Jdforrester-WMF closed this task as Resolved.Feb 18 2026, 11:17 PM

With the deploy we've gone from server response not wellformed ERRORs to server response was not a ZObject WARNINGs; we'll fix this properly later, but this handling is good enough for now.

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