[{reqId}] {exception_url} PHP Warning: Undefined array key "href"In the last 90 day window, there have been 44 hits, starting April 1, 2026.
Minerva is likely a red herring here.
The error means something used the SkinTemplateNavigation::Universal hook to add a menu item without a href or text.
That shouldn't be allowed and should be better enforced.
The only recent change to this code was https://gerrit.wikimedia.org/r/c/mediawiki/skins/MinervaNeue/+/1264625 but I think that's likely a red herring.
We'd need to audit recent changes to SkinTemplateNavigation hooks to pinpoint the issue.
Hi, I'm following up on a comment on patch 1253392. I don’t think patch 1253392 surfaced this error, because I can’t see a way in which those changes would have removed or changed $item['href']. Let me know if you have any other questions, thanks.
Change #1270073 had a related patch set uploaded (by Jdlrobson; author: Jdlrobson):
[mediawiki/core@master] Ensure consistency across links data structure
https://gerrit.wikimedia.org/r/1270073 should help us track this down better.
I've only seen this 11 times in the last 7 days
https://logstash.wikimedia.org/goto/ca6c414a9d4b7648774495be750cee8c
context_ab_tests.we-1-8-mobile-account-menu is treatment for all the errors, so I suspect it relates to that experiment.
@Sgs perhaps you can see if you can replicate this in the experiment using https://gerrit.wikimedia.org/r/1270073 to trigger a fatal in the error state?
https://gerrit.wikimedia.org/g/mediawiki/skins/MinervaNeue/+/2ba8d3029906fa48707c3f4f6826141cf10039d5/includes/Skins/SkinMinerva.php#473 sets an icon even if the createaccount key doesn't exist
e.g.
unset( $personalUrls["createaccount"] );
....
# your code
$shouldShowAccountMenuItems = $this->shouldShowAccountMenuItems();
if ( $shouldShowAccountMenuItems && !$hasPersonalMenu ) {
$personalUrls["createaccount"]["icon"] = "userAvatar";
}Change #1270550 had a related patch set uploaded (by Jdlrobson; author: Jdlrobson):
[mediawiki/extensions/GrowthExperiments@master] Don't set href for a link that has been unset
Change #1270550 merged by jenkins-bot:
[mediawiki/extensions/GrowthExperiments@master] Don't set href for a link that has been unset
Change #1275543 had a related patch set uploaded (by Jdlrobson; author: Jdlrobson):
[mediawiki/extensions/GrowthExperiments@wmf/1.46.0-wmf.24] Don't set href for a link that has been unset
I chatted about this elsewhere with @Jdlrobson-WMF, and this does not seem to need work by Growth right now. Don't set href for a link that has been unset has been merged into master and will roll out to all wikis on Thursday with the train.
But we'll keep a close look on it and are here for code review or work if it is needed from us.
Change #1275543 abandoned by Jdlrobson:
[mediawiki/extensions/GrowthExperiments@wmf/1.46.0-wmf.24] Don't set href for a link that has been unset
Reason:
I've been unable to replicate this, so not seeing the value in backporting any more. I'll monitor this as it rolls out on the train.
Change #1270073 merged by jenkins-bot:
[mediawiki/core@master] Ensure consistency across links data structure