Internal error
RequestContext::setLang was passed an invalid type of data.
Backtrace:
#0 /mnt/raid/grey/www/mediawiki/code/includes/parser/Parser.php(3239): RequestContext->setLang(Object(StubUserLang))
#1 /mnt/raid/grey/www/mediawiki/code/includes/parser/Preprocessor_DOM.php(1043): Parser->braceSubstitution(Array, Object(PPFrame_DOM))
#2 /mnt/raid/grey/www/mediawiki/code/includes/parser/Parser.php(2951): PPFrame_DOM->expand(Object(PPNode_DOM), 0)
#3 /mnt/raid/grey/www/mediawiki/code/includes/parser/Parser.php(1069): Parser->replaceVariables('__NOTOC__?<p st...')
#4 /mnt/raid/grey/www/mediawiki/code/includes/parser/Parser.php(345): Parser->internalParse('__NOTOC__?<p st...')
#5 /mnt/raid/grey/www/mediawiki/code/includes/Article.php(1857): Parser->parse('__NOTOC__?<p st...', Object(Title), Object(ParserOptions), true, true, 3742631)
#6 /mnt/raid/grey/www/mediawiki/code/includes/Article.php(1777): Article->getOutputFromWikitext('__NOTOC__?<p st...', true, Object(ParserOptions))
#7 /mnt/raid/grey/www/mediawiki/code/includes/Article.php(1028): Article->outputWikiText('__NOTOC__?<p st...', true, Object(ParserOptions))
#8 /mnt/raid/grey/www/mediawiki/code/includes/Article.php(2034): Article->doViewParse()
#9 /mnt/raid/grey/www/mediawiki/code/includes/PoolCounter.php(187): PoolWorkArticleView->doWork()
#10 /mnt/raid/grey/www/mediawiki/code/includes/Article.php(547): PoolCounterWork->execute()
#11 /mnt/raid/grey/www/mediawiki/code/includes/Wiki.php(469): Article->view()
#12 /mnt/raid/grey/www/mediawiki/code/includes/Wiki.php(240): MediaWiki->performAction(Object(Article))
#13 /mnt/raid/grey/www/mediawiki/code/includes/Wiki.php(600): MediaWiki->performRequest()
#14 /mnt/raid/grey/www/mediawiki/code/includes/Wiki.php(519): MediaWiki->main()
#15 /mnt/raid/grey/www/mediawiki/code/index.php(58): MediaWiki->run()
#16 {main}