Fatal error: Declaration of SpecialMobileEditWatchlist::outputSubtitle() must be compatible with MediaWiki\Specials\SpecialEditWatchlist::outputSubtitle(): void in /var/www/html/w/extensions/MobileFrontend/includes/specials/SpecialMobileEditWatchlist.php on line 37
Stack trace: #0 /var/www/html/w/includes/AutoLoader.php(172): require_once() #1 [internal function]: AutoLoader::autoload() #2 /var/www/html/w/vendor/wikimedia/object-factory/src/ObjectFactory.php(265): class_exists() #3 /var/www/html/w/vendor/wikimedia/object-factory/src/ObjectFactory.php(154): Wikimedia\ObjectFactory\ObjectFactory::validateSpec() #4 /var/www/html/w/vendor/wikimedia/object-factory/src/ObjectFactory.php(130): Wikimedia\ObjectFactory\ObjectFactory::getObjectFromSpec() #5 /var/www/html/w/includes/SpecialPage/SpecialPageFactory.php(1546): Wikimedia\ObjectFactory\ObjectFactory->createObject() #6 /var/www/html/w/includes/SpecialPage/SpecialPageFactory.php(1593): MediaWiki\SpecialPage\SpecialPageFactory->getPage() #7 /var/www/html/w/includes/Specials/SpecialSpecialPages.php(48): MediaWiki\SpecialPage\SpecialPageFactory->getUsablePages() #8 /var/www/html/w/includes/Specials/SpecialSpecialPages.php(36): MediaWiki\Specials\SpecialSpecialPages->getPageGroups() #9 /var/www/html/w/includes/SpecialPage/SpecialPage.php(730): MediaWiki\Specials\SpecialSpecialPages->execute() #10 /var/www/html/w/includes/SpecialPage/SpecialPageFactory.php(1711): MediaWiki\SpecialPage\SpecialPage->run() #11 /var/www/html/w/includes/Actions/ActionEntryPoint.php(505): MediaWiki\SpecialPage\SpecialPageFactory->executePath() #12 /var/www/html/w/includes/Actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest() #13 /var/www/html/w/includes/MediaWikiEntryPoint.php(180): MediaWiki\Actions\ActionEntryPoint->execute() #14 /var/www/html/w/index.php(44): MediaWiki\MediaWikiEntryPoint->run() #15 {main}