MediaWiki internal error.

Original exception: [c79a1bfa] /mediawiki/index.php?title=Special:Watchlist Exception from line 346 of /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/specialpage/SpecialPage.php: Please <a href="/mediawiki/index.php?title=Special:UserLogin&amp;returnto=Special%3AWatchlist" title="Special:UserLogin">log in</a> to view or edit items on your watchlist.
Backtrace:
#0 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/specials/SpecialWatchlist.php(44): SpecialPage->requireLogin(Message)
#1 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/specialpage/SpecialPage.php(379): SpecialWatchlist->execute(NULL)
#2 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/specialpage/SpecialPageFactory.php(503): SpecialPage->run(NULL)
#3 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/Wiki.php(285): SpecialPageFactory::executePath(Title, RequestContext)
#4 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/Wiki.php(588): MediaWiki->performRequest()
#5 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/Wiki.php(447): MediaWiki->main()
#6 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/index.php(46): MediaWiki->run()
#7 {main}

Exception caught inside exception handler: [b36365ea] /mediawiki/index.php?title=Special:Watchlist Exception from line 222 of /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/Hooks.php: Detected bug in an extension! Hook wfDynamicPageList has invalid call signature; Parameter 1 to wfDynamicPageList() expected to be a reference, value given
Backtrace:
#0 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/GlobalFunctions.php(4013): Hooks::run(string, array, NULL)
#1 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/parser/Parser.php(275): wfRunHooks(string, array)
#2 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/StubObject.php(99): Parser->firstCallInit()
#3 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/StubObject.php(119): StubObject->_call(string, array)
#4 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/cache/MessageCache.php(1023): StubObject->__call(string, array)
#5 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/cache/MessageCache.php(1000): MessageCache->getParser()
#6 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/Message.php(977): MessageCache->transform(string, boolean, Language, Title)
#7 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/Message.php(669): Message->transformText(string)
#8 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/Message.php(732): Message->toString()
#9 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/OutputPage.php(853): Message->text()
#10 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/OutputPage.php(898): OutputPage->setHTMLTitle(Message)
#11 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/OutputPage.php(2139): OutputPage->setPageTitle(string)
#12 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/OutputPage.php(2168): OutputPage->prepareErrorPage(Message)
#13 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/exception/ErrorPageError.php(58): OutputPage->showErrorPage(Message, Message, array)
#14 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/exception/MWExceptionHandler.php(44): ErrorPageError->report()
#15 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/exception/MWExceptionHandler.php(139): MWExceptionHandler::report(UserNotLoggedIn)
#16 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/includes/Wiki.php(454): MWExceptionHandler::handle(UserNotLoggedIn)
#17 /nfs/c08/h02/mnt/172348/domains/researchpipeline.com/html/mediawiki/index.php(46): MediaWiki->run()
#18 {main}