LiquidThreads [[ https://github.com/wikimedia/mediawiki-extensions-LiquidThreads/blob/master/pages/SpecialNewMessages.php#L30 | builds an Article ]] with a special page as a title, which was deprecated.
Req: /wiki/Special:NewMessages
Stack:
```
#4 /srv/mediawiki/php-1.36.0-wmf.29/includes/page/WikiPage.php(146): wfDeprecatedMsg(string, string)
#5 /srv/mediawiki/php-1.36.0-wmf.29/includes/page/Article.php(138): WikiPage->__construct(Title)
#6 /srv/mediawiki/php-1.36.0-wmf.29/includes/page/Article.php(125): Article->newPage(Title)
#7 /srv/mediawiki/php-1.36.0-wmf.29/extensions/LiquidThreads/pages/SpecialNewMessages.php(30): Article->__construct(Title, integer)
#8 /srv/mediawiki/php-1.36.0-wmf.29/includes/specialpage/SpecialPage.php(645): SpecialNewMessages->execute(NULL)
#9 /srv/mediawiki/php-1.36.0-wmf.29/includes/specialpage/SpecialPageFactory.php(1405): SpecialPage->run(NULL)
#10 /srv/mediawiki/php-1.36.0-wmf.29/includes/MediaWiki.php(310): MediaWiki\SpecialPage\SpecialPageFactory->executePath(Title, RequestContext)
#11 /srv/mediawiki/php-1.36.0-wmf.29/includes/MediaWiki.php(944): MediaWiki->performRequest()
#12 /srv/mediawiki/php-1.36.0-wmf.29/includes/MediaWiki.php(548): MediaWiki->main()
#13 /srv/mediawiki/php-1.36.0-wmf.29/index.php(53): MediaWiki->run()
```