MediaWiki internal error.

Original exception: [6e9b3cfaabb285c8e0c4e7ea] /w-pool/index.php?title=%D0%98%D0%BD%D0%B4%D0%B5%D0%BA%D1%81:VT-2-1910.djvu&oldid=4989&mobileaction=toggle_view_mobile MWUnknownContentModelException from line 201 of /home/www/ru.teopedia.org/mw-1.35.1/includes/content/ContentHandlerFactory.php: The content model 'proofread-index' is not registered on this wiki.
See https://www.mediawiki.org/wiki/Content_handlers to find out which extensions handle this content model.
Backtrace:
#0 /home/www/ru.teopedia.org/mw-1.35.1/includes/content/ContentHandlerFactory.php(266): MediaWiki\Content\ContentHandlerFactory->validateContentHandler()
#1 /home/www/ru.teopedia.org/mw-1.35.1/includes/content/ContentHandlerFactory.php(189): MediaWiki\Content\ContentHandlerFactory->createContentHandlerFromHook()
#2 /home/www/ru.teopedia.org/mw-1.35.1/includes/content/ContentHandlerFactory.php(97): MediaWiki\Content\ContentHandlerFactory->createForModelID()
#3 /home/www/ru.teopedia.org/mw-1.35.1/includes/MediaWiki.php(428): MediaWiki\Content\ContentHandlerFactory->getContentHandler()
#4 /home/www/ru.teopedia.org/mw-1.35.1/includes/MediaWiki.php(311): MediaWiki->initializeArticle()
#5 /home/www/ru.teopedia.org/mw-1.35.1/includes/MediaWiki.php(940): MediaWiki->performRequest()
#6 /home/www/ru.teopedia.org/mw-1.35.1/includes/MediaWiki.php(543): MediaWiki->main()
#7 /home/www/ru.teopedia.org/mw-1.35.1/index.php(53): MediaWiki->run()
#8 /home/www/ru.teopedia.org/mw-1.35.1/index.php(46): wfIndexMain()
#9 {main}

Exception caught inside exception handler: [6e9b3cfaabb285c8e0c4e7ea] /w-pool/index.php?title=%D0%98%D0%BD%D0%B4%D0%B5%D0%BA%D1%81:VT-2-1910.djvu&oldid=4989&mobileaction=toggle_view_mobile MWUnknownContentModelException from line 201 of /home/www/ru.teopedia.org/mw-1.35.1/includes/content/ContentHandlerFactory.php: The content model 'proofread-index' is not registered on this wiki.
See https://www.mediawiki.org/wiki/Content_handlers to find out which extensions handle this content model.
Backtrace:
#0 /home/www/ru.teopedia.org/mw-1.35.1/includes/content/ContentHandlerFactory.php(266): MediaWiki\Content\ContentHandlerFactory->validateContentHandler()
#1 /home/www/ru.teopedia.org/mw-1.35.1/includes/content/ContentHandlerFactory.php(189): MediaWiki\Content\ContentHandlerFactory->createContentHandlerFromHook()
#2 /home/www/ru.teopedia.org/mw-1.35.1/includes/content/ContentHandlerFactory.php(97): MediaWiki\Content\ContentHandlerFactory->createForModelID()
#3 /home/www/ru.teopedia.org/mw-1.35.1/includes/content/ContentHandler.php(216): MediaWiki\Content\ContentHandlerFactory->getContentHandler()
#4 /home/www/ru.teopedia.org/mw-1.35.1/skins/MinervaNeue/includes/Permissions/MinervaPagePermissions.php(99): ContentHandler::getForTitle()
#5 /home/www/ru.teopedia.org/mw-1.35.1/skins/MinervaNeue/includes/ServiceWiring.php(145): MediaWiki\Minerva\Permissions\MinervaPagePermissions->setContext()
#6 /home/www/ru.teopedia.org/mw-1.35.1/vendor/wikimedia/services/src/ServiceContainer.php(447): Wikimedia\Services\ServiceContainer->{closure}()
#7 /home/www/ru.teopedia.org/mw-1.35.1/vendor/wikimedia/services/src/ServiceContainer.php(416): Wikimedia\Services\ServiceContainer->createService()
#8 /home/www/ru.teopedia.org/mw-1.35.1/skins/MinervaNeue/includes/Skins/SkinMinerva.php(71): Wikimedia\Services\ServiceContainer->getService()
#9 /home/www/ru.teopedia.org/mw-1.35.1/skins/MinervaNeue/includes/Skins/SkinMinerva.php(735): SkinMinerva->getPermissions()
#10 /home/www/ru.teopedia.org/mw-1.35.1/includes/skins/SkinTemplate.php(141): SkinMinerva->getJsConfigVars()
#11 /home/www/ru.teopedia.org/mw-1.35.1/includes/OutputPage.php(2615): SkinTemplate->outputPage()
#12 /home/www/ru.teopedia.org/mw-1.35.1/includes/exception/MWException.php(193): OutputPage->output()
#13 /home/www/ru.teopedia.org/mw-1.35.1/includes/exception/MWException.php(231): MWException->reportHTML()
#14 /home/www/ru.teopedia.org/mw-1.35.1/includes/exception/MWExceptionHandler.php(104): MWException->report()
#15 /home/www/ru.teopedia.org/mw-1.35.1/includes/exception/MWExceptionHandler.php(185): MWExceptionHandler::report()
#16 /home/www/ru.teopedia.org/mw-1.35.1/includes/MediaWiki.php(576): MWExceptionHandler::handleException()
#17 /home/www/ru.teopedia.org/mw-1.35.1/index.php(53): MediaWiki->run()
#18 /home/www/ru.teopedia.org/mw-1.35.1/index.php(46): wfIndexMain()
#19 {main}