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PHP Warning: Undefined array key 0
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  • mwversion: 1.45.0-wmf.15
  • timestamp: 2025-08-20T17:33:48.327Z
  • phpversion: 8.1.33
  • reqId: 5bebe3ae-4771-4c98-ae13-bf736f88116b
  • Find reqId in Logstash
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[{reqId}] {exception_url}   PHP Warning: Undefined array key 0
FrameLocationCall
from/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/WikiTexVC/Nodes/TexArray.php(120)
#0/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/WikiTexVC/Nodes/TexArray.php(120)MediaWiki\Exception\MWExceptionHandler::handleError(int, string, string, int)
#1/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/WikiTexVC/Nodes/TexArray.php(241)MediaWiki\Extension\Math\WikiTexVC\Nodes\TexArray->checkForLimits(MediaWiki\Extension\Math\WikiTexVC\Nodes\DQ, null)
#2/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/WikiTexVC/Nodes/TexArray.php(346)MediaWiki\Extension\Math\WikiTexVC\Nodes\TexArray->toMMLTree(array, array)
#3/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/WikiTexVC/Nodes/TexArray.php(297)MediaWiki\Extension\Math\WikiTexVC\Nodes\TexArray->createMMLwithContext(null, MediaWiki\Extension\Math\WikiTexVC\Nodes\TexArray, array, array)
#4/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/InputCheck/LocalChecker.php(122)MediaWiki\Extension\Math\WikiTexVC\Nodes\TexArray->toMMLTree()
#5/srv/mediawiki/php-1.45.0-wmf.15/includes/libs/objectcache/WANObjectCache.php(1842)MediaWiki\Extension\Math\InputCheck\LocalChecker->runCheck(bool, int, array, null, array)
#6/srv/mediawiki/php-1.45.0-wmf.15/includes/libs/objectcache/WANObjectCache.php(1646)Wikimedia\ObjectCache\WANObjectCache->fetchOrRegenerate(string, int, array, array, array)
#7/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/InputCheck/LocalChecker.php(61)Wikimedia\ObjectCache\WANObjectCache->getWithSetCallback(string, int, array, array)
#8/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/InputCheck/LocalChecker.php(34)MediaWiki\Extension\Math\InputCheck\LocalChecker->run()
#9/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/MathRenderer.php(607)MediaWiki\Extension\Math\InputCheck\LocalChecker->isValid()
#10/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/MathRenderer.php(524)MediaWiki\Extension\Math\MathRenderer->doCheck()
#11/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/HookHandlers/ParserHooksHandler.php(123)MediaWiki\Extension\Math\MathRenderer->checkTeX()
#12/srv/mediawiki/php-1.45.0-wmf.15/extensions/Math/src/HookHandlers/ParserHooksHandler.php(166)MediaWiki\Extension\Math\HookHandlers\ParserHooksHandler->mathPostTagHook(MediaWiki\Extension\Math\MathMathML, MediaWiki\Parser\Parser)
#13/srv/mediawiki/php-1.45.0-wmf.15/includes/HookContainer/HookContainer.php(155)MediaWiki\Extension\Math\HookHandlers\ParserHooksHandler->onParserAfterTidy(MediaWiki\Parser\Parser, string)
#14/srv/mediawiki/php-1.45.0-wmf.15/includes/HookContainer/HookRunner.php(3286)MediaWiki\HookContainer\HookContainer->run(string, array)
#15/srv/mediawiki/php-1.45.0-wmf.15/includes/parser/Parser.php(1685)MediaWiki\HookContainer\HookRunner->onParserAfterTidy(MediaWiki\Parser\Parser, string)
#16/srv/mediawiki/php-1.45.0-wmf.15/includes/parser/Parser.php(631)MediaWiki\Parser\Parser->internalParseHalfParsed(string, bool, bool)
#17/srv/mediawiki/php-1.45.0-wmf.15/includes/content/WikitextContentHandler.php(389)MediaWiki\Parser\Parser->parse(string, MediaWiki\Title\Title, MediaWiki\Parser\ParserOptions, bool, bool, int)
#18/srv/mediawiki/php-1.45.0-wmf.15/includes/content/ContentHandler.php(1695)MediaWiki\Content\WikitextContentHandler->fillParserOutput(MediaWiki\Content\WikitextContent, MediaWiki\Content\Renderer\ContentParseParams, MediaWiki\Parser\ParserOutput)
#19/srv/mediawiki/php-1.45.0-wmf.15/includes/content/Renderer/ContentRenderer.php(75)MediaWiki\Content\ContentHandler->getParserOutput(MediaWiki\Content\WikitextContent, MediaWiki\Content\Renderer\ContentParseParams)
#20/srv/mediawiki/php-1.45.0-wmf.15/includes/Revision/RenderedRevision.php(261)MediaWiki\Content\Renderer\ContentRenderer->getParserOutput(MediaWiki\Content\WikitextContent, MediaWiki\Page\PageIdentityValue, MediaWiki\Revision\RevisionStoreCacheRecord, MediaWiki\Parser\ParserOptions, array)
#21/srv/mediawiki/php-1.45.0-wmf.15/includes/Revision/RenderedRevision.php(233)MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached(MediaWiki\Content\WikitextContent, array)
#22/srv/mediawiki/php-1.45.0-wmf.15/includes/Revision/RevisionRenderer.php(237)MediaWiki\Revision\RenderedRevision->getSlotParserOutput(string, array)
#23/srv/mediawiki/php-1.45.0-wmf.15/includes/Revision/RevisionRenderer.php(170)MediaWiki\Revision\RevisionRenderer->combineSlotOutput(MediaWiki\Revision\RenderedRevision, MediaWiki\Parser\ParserOptions, array)
#24/srv/mediawiki/php-1.45.0-wmf.15/includes/Revision/RenderedRevision.php(196)MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}(MediaWiki\Revision\RenderedRevision, array)
#25/srv/mediawiki/php-1.45.0-wmf.15/includes/page/ParserOutputAccess.php(602)MediaWiki\Revision\RenderedRevision->getRevisionParserOutput()
#26/srv/mediawiki/php-1.45.0-wmf.15/includes/page/ParserOutputAccess.php(689)MediaWiki\Page\ParserOutputAccess->renderRevision(MediaWiki\Page\WikiPage, MediaWiki\Parser\ParserOptions, MediaWiki\Revision\RevisionStoreCacheRecord, array)
#27/srv/mediawiki/php-1.45.0-wmf.15/includes/poolcounter/PoolCounterWorkViaCallback.php(82)MediaWiki\Page\ParserOutputAccess->MediaWiki\Page\{closure}()
#28/srv/mediawiki/php-1.45.0-wmf.15/includes/poolcounter/PoolCounterWork.php(173)MediaWiki\PoolCounter\PoolCounterWorkViaCallback->doWork()
#29/srv/mediawiki/php-1.45.0-wmf.15/includes/page/ParserOutputAccess.php(506)MediaWiki\PoolCounter\PoolCounterWork->execute()
#30/srv/mediawiki/php-1.45.0-wmf.15/includes/page/Article.php(837)MediaWiki\Page\ParserOutputAccess->getParserOutput(MediaWiki\Page\WikiPage, MediaWiki\Parser\ParserOptions, MediaWiki\Revision\RevisionStoreCacheRecord, array)
#31/srv/mediawiki/php-1.45.0-wmf.15/includes/page/Article.php(549)MediaWiki\Page\Article->generateContentOutput(MediaWiki\User\User, MediaWiki\Parser\ParserOptions, int, MediaWiki\Output\OutputPage, array)
#32/srv/mediawiki/php-1.45.0-wmf.15/includes/actions/ViewAction.php(84)MediaWiki\Page\Article->view()
#33/srv/mediawiki/php-1.45.0-wmf.15/includes/actions/ActionEntryPoint.php(728)MediaWiki\Actions\ViewAction->show()
#34/srv/mediawiki/php-1.45.0-wmf.15/includes/actions/ActionEntryPoint.php(505)MediaWiki\Actions\ActionEntryPoint->performAction(MediaWiki\Page\Article, MediaWiki\Title\Title)
#35/srv/mediawiki/php-1.45.0-wmf.15/includes/actions/ActionEntryPoint.php(143)MediaWiki\Actions\ActionEntryPoint->performRequest()
#36/srv/mediawiki/php-1.45.0-wmf.15/includes/MediaWikiEntryPoint.php(198)MediaWiki\Actions\ActionEntryPoint->execute()
#37/srv/mediawiki/php-1.45.0-wmf.15/index.php(58)MediaWiki\MediaWikiEntryPoint->run()
#38/srv/mediawiki/w/index.php(3)require(string)
#39{main}
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Request URL
https://de.wikiversity.org/wiki/Kurs:Mathematik_f%C3%BCr_Elektrotechnik/elementare_Funktionen