MediaWiki internal error.

Original exception: [af4f930c] /index.php?title=Datei:Luftbild_Flugplatz_Witzenhausen.JPG&diff=prev&oldid=47862 Exception from line 222 of /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Hooks.php: Detected bug in an extension! Hook wfSetupImageMap has invalid call signature; Parameter 1 to wfSetupImageMap() expected to be a reference, value given
Backtrace:
#0 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/GlobalFunctions.php(4013): Hooks::run(string, array, NULL)
#1 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/parser/Parser.php(275): wfRunHooks(string, array)
#2 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/StubObject.php(99): Parser->firstCallInit()
#3 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/StubObject.php(119): StubObject->_call(string, array)
#4 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/cache/MessageCache.php(1023): StubObject->__call(string, array)
#5 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/cache/MessageCache.php(1000): MessageCache->getParser()
#6 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Message.php(977): MessageCache->transform(string, boolean, Language, Title)
#7 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Message.php(669): Message->transformText(string)
#8 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Message.php(732): Message->toString()
#9 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/OutputPage.php(855): Message->text()
#10 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/OutputPage.php(900): OutputPage->setHTMLTitle(Message)
#11 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/diff/DifferenceEngine.php(286): OutputPage->setPageTitle(string)
#12 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Article.php(826): DifferenceEngine->showDiffPage(boolean)
#13 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Article.php(549): Article->showDiffPage()
#14 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/ImagePage.php(161): Article->view()
#15 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/actions/ViewAction.php(44): ImagePage->view()
#16 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Wiki.php(428): ViewAction->show()
#17 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Wiki.php(292): MediaWiki->performAction(ImagePage, Title)
#18 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Wiki.php(588): MediaWiki->performRequest()
#19 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Wiki.php(447): MediaWiki->main()
#20 /www/htdocs/w0159ac1/wiki-goettingen.de/update/index.php(46): MediaWiki->run()
#21 {main}

Exception caught inside exception handler: [fcd7fe9e] /index.php?title=Datei:Luftbild_Flugplatz_Witzenhausen.JPG&diff=prev&oldid=47862 Exception from line 222 of /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Hooks.php: Detected bug in an extension! Hook Cite::clearState has invalid call signature; Parameter 1 to Cite::clearState() expected to be a reference, value given
Backtrace:
#0 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/GlobalFunctions.php(4013): Hooks::run(string, array, NULL)
#1 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/parser/Parser.php(340): wfRunHooks(string, array)
#2 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/parser/Parser.php(4825): Parser->clearState()
#3 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/parser/Parser.php(614): Parser->startParse(Title, ParserOptions, integer, boolean)
#4 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/parser/Parser.php(4852): Parser->preprocess(string, Title, ParserOptions)
#5 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/cache/MessageCache.php(1008): Parser->transformMsg(string, ParserOptions, Title)
#6 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Message.php(977): MessageCache->transform(string, boolean, Language, Title)
#7 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Message.php(669): Message->transformText(string)
#8 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Message.php(732): Message->toString()
#9 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/OutputPage.php(855): Message->text()
#10 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/OutputPage.php(900): OutputPage->setHTMLTitle(Message)
#11 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/OutputPage.php(2166): OutputPage->setPageTitle(string)
#12 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/exception/MWException.php(210): OutputPage->prepareErrorPage(string)
#13 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/exception/MWException.php(260): MWException->reportHTML()
#14 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/exception/MWExceptionHandler.php(44): MWException->report()
#15 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/exception/MWExceptionHandler.php(139): MWExceptionHandler::report(MWException)
#16 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/Wiki.php(454): MWExceptionHandler::handle(MWException)
#17 /www/htdocs/w0159ac1/wiki-goettingen.de/update/index.php(46): MediaWiki->run()
#18 {main}