Error
Request ID: W9tCPApAIEIAAKWQ9TAAAAAP
PHP Notice: Undefined index: deletedcontribs
#0 /srv/mediawiki/php-1.32.0-wmf.24/includes/GlobalFunctions.php(234): MWExceptionHandler::handleError(integer, string, string, integer, array, array) #1 /srv/mediawiki/php-1.32.0-wmf.24/includes/specials/SpecialDeletedContributions.php(156): wfArrayInsertAfter(array, array, string) #2 /srv/mediawiki/php-1.32.0-wmf.24/includes/specials/SpecialDeletedContributions.php(92): DeletedContributionsPage->getSubTitle(User) #3 /srv/mediawiki/php-1.32.0-wmf.24/includes/specialpage/SpecialPage.php(569): DeletedContributionsPage->execute(string) #4 /srv/mediawiki/php-1.32.0-wmf.24/includes/specialpage/SpecialPageFactory.php(568): SpecialPage->run(string) #5 /srv/mediawiki/php-1.32.0-wmf.24/includes/MediaWiki.php(288): MediaWiki\Special\SpecialPageFactory->executePath(Title, RequestContext) #6 /srv/mediawiki/php-1.32.0-wmf.24/includes/MediaWiki.php(868): MediaWiki->performRequest() #7 /srv/mediawiki/php-1.32.0-wmf.24/includes/MediaWiki.php(525): MediaWiki->main() #8 /srv/mediawiki/php-1.32.0-wmf.24/index.php(42): MediaWiki->run()
Impact
Unknown.
It is currently a non-fatal error, which could mean that it is completely broken (the user asked for information that is available but nothing is displayed), or it could mean it is an expected issue that the code forgot to explicitly check for and happens to work right - or anything in-between.
Notes
The Special:DeletedContributions page is restricted. To investigate/reproduce the issue, administrator privileges are required.
The error is recorded in Logstash from en.wikipedia.org, sv.wikipedia.org and nl.wikipedia.org with URLs like "/wiki/Special:DeletedContributions/123.123.123.123/21?namespace=0" (where 123.123.123.13 is an IP, and /21 a CIDR range).