Internal error

From DWIKI

[3947c4c5a842313b0446a40b] /index.php?title=Git&oldid=5525 Exception: preg_match_all error 4: Malformed UTF-8 characters, possibly incorrectly encoded

Backtrace:

from /var/www/mediawiki-1.39.1/includes/MagicWordArray.php(319)
#0 /var/www/mediawiki-1.39.1/includes/parser/Parser.php(4116): MagicWordArray->matchAndRemove()
#1 /var/www/mediawiki-1.39.1/includes/parser/Parser.php(1636): Parser->handleDoubleUnderscore()
#2 /var/www/mediawiki-1.39.1/includes/parser/Parser.php(724): Parser->internalParse()
#3 /var/www/mediawiki-1.39.1/includes/content/WikitextContentHandler.php(301): Parser->parse()
#4 /var/www/mediawiki-1.39.1/includes/content/ContentHandler.php(1721): WikitextContentHandler->fillParserOutput()
#5 /var/www/mediawiki-1.39.1/includes/content/Renderer/ContentRenderer.php(47): ContentHandler->getParserOutput()
#6 /var/www/mediawiki-1.39.1/includes/Revision/RenderedRevision.php(266): MediaWiki\Content\Renderer\ContentRenderer->getParserOutput()
#7 /var/www/mediawiki-1.39.1/includes/Revision/RenderedRevision.php(237): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached()
#8 /var/www/mediawiki-1.39.1/includes/Revision/RevisionRenderer.php(221): MediaWiki\Revision\RenderedRevision->getSlotParserOutput()
#9 /var/www/mediawiki-1.39.1/includes/Revision/RevisionRenderer.php(158): MediaWiki\Revision\RevisionRenderer->combineSlotOutput()
#10 [internal function]: MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}()
#11 /var/www/mediawiki-1.39.1/includes/Revision/RenderedRevision.php(199): call_user_func()
#12 /var/www/mediawiki-1.39.1/includes/poolcounter/PoolWorkArticleView.php(91): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput()
#13 /var/www/mediawiki-1.39.1/includes/poolcounter/PoolWorkArticleViewOld.php(66): PoolWorkArticleView->renderRevision()
#14 /var/www/mediawiki-1.39.1/includes/poolcounter/PoolCounterWork.php(162): PoolWorkArticleViewOld->doWork()
#15 /var/www/mediawiki-1.39.1/includes/page/ParserOutputAccess.php(299): PoolCounterWork->execute()
#16 /var/www/mediawiki-1.39.1/includes/page/Article.php(714): MediaWiki\Page\ParserOutputAccess->getParserOutput()
#17 /var/www/mediawiki-1.39.1/includes/page/Article.php(528): Article->generateContentOutput()
#18 /var/www/mediawiki-1.39.1/includes/actions/ViewAction.php(78): Article->view()
#19 /var/www/mediawiki-1.39.1/includes/MediaWiki.php(542): ViewAction->show()
#20 /var/www/mediawiki-1.39.1/includes/MediaWiki.php(322): MediaWiki->performAction()
#21 /var/www/mediawiki-1.39.1/includes/MediaWiki.php(904): MediaWiki->performRequest()
#22 /var/www/mediawiki-1.39.1/includes/MediaWiki.php(562): MediaWiki->main()
#23 /var/www/mediawiki-1.39.1/index.php(50): MediaWiki->run()
#24 /var/www/mediawiki-1.39.1/index.php(46): wfIndexMain()
#25 {main}