Fatal error: OOUI\Exception: OOUI\Theme::singleton was called with no singleton theme set. in /www/wwwroot/wiki.scpsl.site/vendor/oojs/oojs-ui/php/Theme.php:31
Stack trace:
#0 /www/wwwroot/wiki.scpsl.site/vendor/oojs/oojs-ui/php/Element.php(259): OOUI\Theme::singleton()
#1 /www/wwwroot/wiki.scpsl.site/vendor/oojs/oojs-ui/php/Tag.php(507): OOUI\Element->toString()
#2 /www/wwwroot/wiki.scpsl.site/extensions/VisualEditor/includes/Hooks.php(244): OOUI\Tag->__toString()
#3 /www/wwwroot/wiki.scpsl.site/includes/HookContainer/HookContainer.php(161): MediaWiki\Extension\VisualEditor\Hooks->onTextSlotDiffRendererTablePrefix()
#4 /www/wwwroot/wiki.scpsl.site/includes/HookContainer/HookRunner.php(1332): MediaWiki\HookContainer\HookContainer->run()
#5 /www/wwwroot/wiki.scpsl.site/includes/diff/TextSlotDiffRenderer.php(273): MediaWiki\HookContainer\HookRunner->onTextSlotDiffRendererTablePrefix()
#6 /www/wwwroot/wiki.scpsl.site/includes/diff/DifferenceEngine.php(942): TextSlotDiffRenderer->getTablePrefix()
#7 /www/wwwroot/wiki.scpsl.site/includes/diff/DifferenceEngine.php(928): DifferenceEngine->showTablePrefixes()
#8 /www/wwwroot/wiki.scpsl.site/extensions/MobileFrontend/includes/specials/SpecialMobileDiff.php(189): DifferenceEngine->showDiffPage()
#9 /www/wwwroot/wiki.scpsl.site/extensions/MobileFrontend/includes/specials/SpecialMobileDiff.php(143): SpecialMobileDiff->displayDiffPage()
#10 /www/wwwroot/wiki.scpsl.site/extensions/MobileFrontend/includes/specials/MobileSpecialPage.php(71): SpecialMobileDiff->executeWhenAvailable()
#11 /www/wwwroot/wiki.scpsl.site/includes/specialpage/SpecialPage.php(727): MobileSpecialPage->execute()
#12 /www/wwwroot/wiki.scpsl.site/includes/specialpage/SpecialPageFactory.php(1621): MediaWiki\SpecialPage\SpecialPage->run()
#13 /www/wwwroot/wiki.scpsl.site/includes/MediaWiki.php(357): MediaWiki\SpecialPage\SpecialPageFactory->executePath()
#14 /www/wwwroot/wiki.scpsl.site/includes/MediaWiki.php(960): MediaWiki->performRequest()
#15 /www/wwwroot/wiki.scpsl.site/includes/MediaWiki.php(613): MediaWiki->main()
#16 /www/wwwroot/wiki.scpsl.site/index.php(50): MediaWiki->run()
#17 /www/wwwroot/wiki.scpsl.site/index.php(46): wfIndexMain()
#18 {main} in /www/wwwroot/wiki.scpsl.site/vendor/oojs/oojs-ui/php/Tag.php on line 509