#0 /srv/mediawiki/php-1.35.0-wmf.16/includes/title/TitleValue.php(157): Wikimedia\Assert\Assert::parameter(boolean, string, string)
#1 /srv/mediawiki/php-1.35.0-wmf.16/includes/title/TitleValue.php(121): TitleValue::assertValidSpec(integer, string, string, string)
#2 /srv/mediawiki/php-1.35.0-wmf.16/includes/specialpage/SpecialPage.php(102): TitleValue->__construct(integer, string, string)
#3 /srv/mediawiki/php-1.35.0-wmf.16/includes/specialpage/SpecialPage.php(85): SpecialPage::getTitleValueFor(string, string, string)
#4 /srv/mediawiki/php-1.35.0-wmf.16/includes/user/ExternalUserNames.php(79): SpecialPage::getTitleFor(string, string)
#5 /srv/mediawiki/php-1.35.0-wmf.16/includes/Linker.php(909): ExternalUserNames::getUserLinkTitle(string)
#6 /srv/mediawiki/php-1.35.0-wmf.16/includes/Linker.php(1132): Linker::userLink(integer, string)
#7 /srv/mediawiki/php-1.35.0-wmf.16/includes/diff/DifferenceEngine.php(746): Linker::revUserTools(Revision, boolean)
#8 /srv/mediawiki/php-1.35.0-wmf.16/includes/page/Article.php(965): DifferenceEngine->showDiffPage(boolean)
#9 /srv/mediawiki/php-1.35.0-wmf.16/includes/page/Article.php(643): Article->showDiffPage()
#10 /srv/mediawiki/php-1.35.0-wmf.16/includes/actions/ViewAction.php(63): Article->view()
#11 /srv/mediawiki/php-1.35.0-wmf.16/includes/MediaWiki.php(514): ViewAction->show()
#12 /srv/mediawiki/php-1.35.0-wmf.16/includes/MediaWiki.php(304): MediaWiki->performAction(Article, Title)
#13 /srv/mediawiki/php-1.35.0-wmf.16/includes/MediaWiki.php(967): MediaWiki->performRequest()
#14 /srv/mediawiki/php-1.35.0-wmf.16/includes/MediaWiki.php(530): MediaWiki->main()
#15 /srv/mediawiki/php-1.35.0-wmf.16/index.php(46): MediaWiki->run()
#16 /srv/mediawiki/w/index.php(3): require(string)
#17 {main}