Steps to replicate the issue:
What happens?:
[ZUqOmKmQZIIM6Ot8H6sxxgAAAAc] /wiki/Main_Page UnexpectedValueException: Wikimedia\Rdbms\SelectQueryBuilder::fetchFieldValues expects the query to have only one field Backtrace: from /srv/mediawiki/php-master/includes/libs/rdbms/querybuilder/SelectQueryBuilder.php(739) #0 /srv/mediawiki/php-master/extensions/PageImages/includes/Hooks/ParserFileProcessingHookHandlers.php(494): Wikimedia\Rdbms\SelectQueryBuilder->fetchFieldValues() #1 /srv/mediawiki/php-master/extensions/PageImages/includes/Hooks/ParserFileProcessingHookHandlers.php(441): PageImages\Hooks\ParserFileProcessingHookHandlers->getDbDenylist(boolean, string) #2 /srv/mediawiki/php-master/includes/libs/objectcache/wancache/WANObjectCache.php(1726): PageImages\Hooks\ParserFileProcessingHookHandlers->PageImages\Hooks\{closure}(boolean, integer, array, NULL, array) #3 /srv/mediawiki/php-master/includes/libs/objectcache/wancache/WANObjectCache.php(1556): WANObjectCache->fetchOrRegenerate(string, integer, Closure, array, array) #4 /srv/mediawiki/php-master/extensions/PageImages/includes/Hooks/ParserFileProcessingHookHandlers.php(458): WANObjectCache->getWithSetCallback(string, integer, Closure) #5 /srv/mediawiki/php-master/extensions/PageImages/includes/Hooks/ParserFileProcessingHookHandlers.php(331): PageImages\Hooks\ParserFileProcessingHookHandlers->getDenylist() #6 /srv/mediawiki/php-master/extensions/PageImages/includes/Hooks/ParserFileProcessingHookHandlers.php(215): PageImages\Hooks\ParserFileProcessingHookHandlers->getScore(PageImages\PageImageCandidate, integer) #7 /srv/mediawiki/php-master/extensions/PageImages/includes/Hooks/ParserFileProcessingHookHandlers.php(172): PageImages\Hooks\ParserFileProcessingHookHandlers->findBestImages(array) #8 /srv/mediawiki/php-master/includes/HookContainer/HookContainer.php(161): PageImages\Hooks\ParserFileProcessingHookHandlers->onParserAfterTidy(Parser, string) #9 /srv/mediawiki/php-master/includes/HookContainer/HookRunner.php(2903): MediaWiki\HookContainer\HookContainer->run(string, array) #10 /srv/mediawiki/php-master/includes/parser/Parser.php(1690): MediaWiki\HookContainer\HookRunner->onParserAfterTidy(Parser, string) #11 /srv/mediawiki/php-master/includes/parser/Parser.php(654): Parser->internalParseHalfParsed(string, boolean, boolean) #12 /srv/mediawiki/php-master/includes/content/WikitextContentHandler.php(420): Parser->parse(string, MediaWiki\Title\Title, ParserOptions, boolean, boolean, integer) #13 /srv/mediawiki/php-master/includes/content/ContentHandler.php(1759): WikitextContentHandler->fillParserOutput(WikitextContent, MediaWiki\Content\Renderer\ContentParseParams, ParserOutput) #14 /srv/mediawiki/php-master/includes/content/Renderer/ContentRenderer.php(47): ContentHandler->getParserOutput(WikitextContent, MediaWiki\Content\Renderer\ContentParseParams) #15 /srv/mediawiki/php-master/includes/Revision/RenderedRevision.php(260): MediaWiki\Content\Renderer\ContentRenderer->getParserOutput(WikitextContent, MediaWiki\Title\Title, integer, ParserOptions, boolean) #16 /srv/mediawiki/php-master/includes/Revision/RenderedRevision.php(232): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached(WikitextContent, boolean) #17 /srv/mediawiki/php-master/includes/Revision/RevisionRenderer.php(223): MediaWiki\Revision\RenderedRevision->getSlotParserOutput(string, array) #18 /srv/mediawiki/php-master/includes/Revision/RevisionRenderer.php(164): MediaWiki\Revision\RevisionRenderer->combineSlotOutput(MediaWiki\Revision\RenderedRevision, array) #19 [internal function]: MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}(MediaWiki\Revision\RenderedRevision, array) #20 /srv/mediawiki/php-master/includes/Revision/RenderedRevision.php(199): call_user_func(Closure, MediaWiki\Revision\RenderedRevision, array) #21 /srv/mediawiki/php-master/includes/poolcounter/PoolWorkArticleView.php(84): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput() #22 /srv/mediawiki/php-master/includes/poolcounter/PoolWorkArticleViewCurrent.php(104): PoolWorkArticleView->renderRevision() #23 /srv/mediawiki/php-master/includes/poolcounter/PoolCounterWork.php(167): PoolWorkArticleViewCurrent->doWork() #24 /srv/mediawiki/php-master/includes/page/ParserOutputAccess.php(304): PoolCounterWork->execute() #25 /srv/mediawiki/php-master/includes/page/Article.php(756): MediaWiki\Page\ParserOutputAccess->getParserOutput(WikiPage, ParserOptions, MediaWiki\Revision\RevisionStoreCacheRecord, integer) #26 /srv/mediawiki/php-master/includes/page/Article.php(559): Article->generateContentOutput(MediaWiki\User\User, ParserOptions, integer, MediaWiki\Output\OutputPage, array) #27 /srv/mediawiki/php-master/includes/actions/ViewAction.php(78): Article->view() #28 /srv/mediawiki/php-master/includes/MediaWiki.php(583): ViewAction->show() #29 /srv/mediawiki/php-master/includes/MediaWiki.php(363): MediaWiki->performAction(Article, MediaWiki\Title\Title) #30 /srv/mediawiki/php-master/includes/MediaWiki.php(960): MediaWiki->performRequest() #31 /srv/mediawiki/php-master/includes/MediaWiki.php(613): MediaWiki->main() #32 /srv/mediawiki/php-master/index.php(50): MediaWiki->run() #33 /srv/mediawiki/php-master/index.php(46): wfIndexMain() #34 /srv/mediawiki/w/index.php(3): require(string) #35 {main}