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March 5[edit]

OOUI\Exception: OOUI\Theme::singleton was called with no singleton theme set[edit]

I pulled mediawiki:latest in docker desktop. I received the notification: "You've just made your tenth edit; thank you, and please keep going!". When I click on it I see the following error:

http://localhost:999/index.php?title=Nonsense&oldid=prev&diff=11&markasread=6

Fatal error:  OOUI\Exception: OOUI\Theme::singleton was called with no singleton theme set. in /var/www/html/vendor/oojs/oojs-ui/php/Theme.php:31 Stack trace: #0 /var/www/html/vendor/oojs/oojs-ui/php/Element.php(259): OOUI\Theme::singleton() #1 /var/www/html/vendor/oojs/oojs-ui/php/Tag.php(507): OOUI\Element->toString() #2 /var/www/html/extensions/VisualEditor/includes/Hooks.php(244): OOUI\Tag->__toString() #3 /var/www/html/includes/HookContainer/HookContainer.php(161): MediaWiki\Extension\VisualEditor\Hooks->onTextSlotDiffRendererTablePrefix(Object(TextSlotDiffRenderer), Object(RequestContext), Array) #4 /var/www/html/includes/HookContainer/HookRunner.php(1334): MediaWiki\HookContainer\HookContainer->run('TextSlotDiffRen...', Array) #5 /var/www/html/includes/diff/TextSlotDiffRenderer.php(273): MediaWiki\HookContainer\HookRunner->onTextSlotDiffRendererTablePrefix(Object(TextSlotDiffRenderer), Object(RequestContext), Array) #6 /var/www/html/includes/diff/DifferenceEngine.php(942): TextSlotDiffRenderer->getTablePrefix(Object(RequestContext), Object(MediaWiki\Title\Title)) #7 /var/www/html/includes/diff/DifferenceEngine.php(928): DifferenceEngine->showTablePrefixes() #8 /var/www/html/includes/page/Article.php(979): DifferenceEngine->showDiffPage(false) #9 /var/www/html/includes/page/Article.php(490): Article->showDiffPage() #10 /var/www/html/includes/actions/ViewAction.php(78): Article->view() #11 /var/www/html/includes/MediaWiki.php(583): ViewAction->show() #12 /var/www/html/includes/MediaWiki.php(363): MediaWiki->performAction(Object(Article), Object(MediaWiki\Title\Title)) #13 /var/www/html/includes/MediaWiki.php(960): MediaWiki->performRequest() #14 /var/www/html/includes/MediaWiki.php(613): MediaWiki->main() #15 /var/www/html/index.php(50): MediaWiki->run() #16 /var/www/html/index.php(46): wfIndexMain() #17 {main} in /var/www/html/vendor/oojs/oojs-ui/php/Tag.php on line 509

I Googled it and it sent me to https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ConfirmEdit/+/534902 but that line was already in my version of that file.

I added:

$wgDefaultUserOptions['usebetatoolbar'] = 1;
$wgDefaultUserOptions['usebetatoolbar-cgd'] = 1;
$wgDefaultUserOptions['usebetatoolbar-cdt'] = 1;
$wgDefaultUserOptions['usebetatoolbar-source'] = 1;
$wgDefaultUserOptions['usebetatoolbar-diff'] = 1;
$wgDefaultUserOptions['usebetatoolbar-wikitext'] = 1;

to LocalSettings.php but that did nothing as far as I can see. How can I fix this error?

MediaWiki 1.41.0

PHP 8.1.27 (apache2handler)

ICU 72.1

SQLite 3.40.1

Poem, Echo, Thanks, LoginNotify, SpamBlacklist, ReplaceText, TitleBlacklist, Cite, Linter, VisualEditor, DiscussionTools, AbuseFilter, ImageMap, Gadgets, ConfirmEdit, Interwiki, TemplateData, InputBox, Nuke, WikiEditor, MultimediaViewer, TextExtracts, PageImages, Popups, CheckUser

Polygnotus (talk) 20:53, 5 March 2024 (UTC)[reply]