TypeError: Return value of Title::getInterwiki() must be of the type string, null returned
Closed, ResolvedPublicPRODUCTION ERROR
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Authored By

	thcipriani
	Nov 2 2021, 7:11 PM

Description

Error

mwversion: 1.38.0-wmf.6
reqId: abfe6b27-6450-4b88-9774-e61372601b09
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Find normalized_message in Logstash

normalized_message

[{reqId}] {exception_url}   TypeError: Return value of Title::getInterwiki() must be of the type string, null returned

exception.trace

from /srv/mediawiki/php-1.38.0-wmf.6/includes/Title.php(970)
#0 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiPageSet.php(1221): Title->getInterwiki()
#1 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiPageSet.php(1166): ApiPageSet->loadRedirectTargets()
#2 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiPageSet.php(952): ApiPageSet->resolvePendingRedirects()
#3 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiPageSet.php(856): ApiPageSet->initFromTitles(array)
#4 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiQueryPrefixSearch.php(82): ApiPageSet->populateFromTitles(array)
#5 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiQueryPrefixSearch.php(55): ApiQueryPrefixSearch->run(ApiPageSet)
#6 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiPageSet.php(244): ApiQueryPrefixSearch->executeGenerator(ApiPageSet)
#7 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiPageSet.php(208): ApiPageSet->executeInternal(boolean)
#8 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiQuery.php(615): ApiPageSet->execute()
#9 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiMain.php(1886): ApiQuery->execute()
#10 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiMain.php(865): ApiMain->executeAction()
#11 /srv/mediawiki/php-1.38.0-wmf.6/includes/api/ApiMain.php(836): ApiMain->executeActionWithErrorHandling()
#12 /srv/mediawiki/php-1.38.0-wmf.6/api.php(90): ApiMain->execute()
#13 /srv/mediawiki/php-1.38.0-wmf.6/api.php(45): wfApiMain()
#14 /srv/mediawiki/w/api.php(3): require(string)
#15 {main}

Impact

Notes

Seeing a number of these of wmf.6
Seem to all be happening on wikipedias

Details

Request URL: https://hi.wikipedia.org/w/api.php?format=*&formatversion=*&origin=*&action=query&prop=*&piprop=*&pilimit=*&ppprop=*&generator=*&redirects=*&pithumbsize=*&gpslimit=*&gpsnamespace=*&gpssearch=*

Related Objects

Mentioned In: T295652: TypeError: Return value of Title::getInterwiki() must be of the type string, null returned

Event Timeline

thcipriani created this task.Nov 2 2021, 7:11 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptNov 2 2021, 7:11 PM

Possible fixed by https://gerrit.wikimedia.org/r/c/mediawiki/core/+/735304

Zabe subscribed.Nov 2 2021, 10:31 PM

Krinkle moved this task from Untriaged to Oct 2021 on the Wikimedia-production-error board.Nov 3 2021, 7:32 PM

Zabe mentioned this in T295652: TypeError: Return value of Title::getInterwiki() must be of the type string, null returned.Nov 14 2021, 9:21 PM

In T294857#7475776, @Umherirrender wrote:

Possible fixed by https://gerrit.wikimedia.org/r/c/mediawiki/core/+/735304

It still happened last night:

>>> Кулланучы:Lucien leGrey <<<
WARNING: API error internal_api_error_TypeError: [a4aab7c4-3665-4bd0-a8e9-290a6e
1fb31d] Caught exception of type TypeError
ERROR: Detected MediaWiki API exception internal_api_error_TypeError: [a4aab7c4-
3665-4bd0-a8e9-290a6e1fb31d] Caught exception of type TypeError
[errorclass: TypeError;
 servedby: mw1422]; raising

The log entries I can find are all for 1.38.0-wmf.7 and below. I don't really get why this is (what happened to wmf.8?), but it looks like the bugfix is not in any of the currently deployed snapshots.

wmf.8 is not going to happen, see https://wikitech.wikimedia.org/wiki/Deployments/Yearly_calendar. All wikis are still on wmf.7, while the fixing patch linked above is part of wmf.8, which explains why the errors are still happening.

Umherirrender merged a task: T295652: TypeError: Return value of Title::getInterwiki() must be of the type string, null returned.Nov 15 2021, 7:11 PM

Umherirrender added subscribers: Legoktm, pywikibot-bugs-list.

Umherirrender closed this task as Resolved.Nov 22 2021, 9:04 PM

Umherirrender assigned this task to thiemowmde.