Exception encountered, of type "Error"
[XYbRW13ucbFSP4NyXAQYmAAAAAE] /wiki/Special:CategoryTree Error from line 49 of /var/www/neverwere.rpgfiction.net/htdocs/mediawiki/extensions/CategoryTree/CategoryTreePage.php: Call to undefined function wfMsg()
Backtrace:
#0 /var/www/neverwere.rpgfiction.net/htdocs/mediawiki/includes/specialpage/SpecialPage.php(479): CategoryTreePage->execute(NULL)
#1 /var/www/neverwere.rpgfiction.net/htdocs/mediawiki/includes/specialpage/SpecialPageFactory.php(577): SpecialPage->run(NULL)
#2 /var/www/neverwere.rpgfiction.net/htdocs/mediawiki/includes/MediaWiki.php(282): SpecialPageFactory::executePath(Title, RequestContext)
#3 /var/www/neverwere.rpgfiction.net/htdocs/mediawiki/includes/MediaWiki.php(735): MediaWiki->performRequest()
#4 /var/www/neverwere.rpgfiction.net/htdocs/mediawiki/includes/MediaWiki.php(509): MediaWiki->main()
#5 /var/www/neverwere.rpgfiction.net/htdocs/mediawiki/index.php(43): MediaWiki->run()
#6 {main}