Internal error

[da549390c18d83775ee19720] /genealogy/Gabriel_Jones_1771_-_1831 Error: Class "Html" not found

Backtrace:

from /var/www/ancestry/extensions/Maps/src/Map/MapHtmlBuilder.php(21)
#0 /var/www/ancestry/extensions/Maps/src/Map/MapOutputBuilder.php(22): Maps\Map\MapHtmlBuilder->getMapHTML()
#1 /var/www/ancestry/extensions/Maps/src/Map/MapOutputBuilder.php(13): Maps\Map\MapOutputBuilder->buildMapHtml()
#2 /var/www/ancestry/extensions/Maps/src/Map/DisplayMap/DisplayMapRenderer.php(61): Maps\Map\MapOutputBuilder->buildOutput()
#3 /var/www/ancestry/extensions/Maps/src/Map/DisplayMap/DisplayMapFunction.php(64): Maps\Map\DisplayMap\DisplayMapRenderer->renderMap()
#4 /var/www/ancestry/extensions/Maps/src/ParserHookSetup.php(77): Maps\Map\DisplayMap\DisplayMapFunction->getMapHtmlForKeyValueStrings()
#5 /var/www/ancestry/extensions/Maps/src/ParserHookSetup.php(58): Maps\ParserHookSetup->handleFunctionHook()
#6 /var/www/ancestry/includes/parser/Parser.php(3487): Maps\ParserHookSetup->Maps\{closure}()
#7 /var/www/ancestry/includes/parser/Parser.php(3142): MediaWiki\Parser\Parser->callParserFunction()
#8 /var/www/ancestry/includes/parser/PPFrame_Hash.php(280): MediaWiki\Parser\Parser->braceSubstitution()
#9 /var/www/ancestry/includes/parser/Parser.php(2969): MediaWiki\Parser\PPFrame_Hash->expand()
#10 /var/www/ancestry/includes/parser/Parser.php(1601): MediaWiki\Parser\Parser->replaceVariables()
#11 /var/www/ancestry/includes/parser/Parser.php(700): MediaWiki\Parser\Parser->internalParse()
#12 /var/www/ancestry/includes/content/WikitextContentHandler.php(384): MediaWiki\Parser\Parser->parse()
#13 /var/www/ancestry/includes/content/ContentHandler.php(1696): MediaWiki\Content\WikitextContentHandler->fillParserOutput()
#14 /var/www/ancestry/includes/content/Renderer/ContentRenderer.php(75): MediaWiki\Content\ContentHandler->getParserOutput()
#15 /var/www/ancestry/includes/Revision/RenderedRevision.php(260): MediaWiki\Content\Renderer\ContentRenderer->getParserOutput()
#16 /var/www/ancestry/includes/Revision/RenderedRevision.php(233): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached()
#17 /var/www/ancestry/includes/Revision/RevisionRenderer.php(236): MediaWiki\Revision\RenderedRevision->getSlotParserOutput()
#18 /var/www/ancestry/includes/Revision/RevisionRenderer.php(169): MediaWiki\Revision\RevisionRenderer->combineSlotOutput()
#19 /var/www/ancestry/includes/Revision/RenderedRevision.php(196): MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}()
#20 /var/www/ancestry/includes/poolcounter/PoolWorkArticleView.php(106): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput()
#21 /var/www/ancestry/includes/poolcounter/PoolWorkArticleViewCurrent.php(123): MediaWiki\PoolCounter\PoolWorkArticleView->renderRevision()
#22 /var/www/ancestry/includes/poolcounter/PoolCounterWork.php(171): MediaWiki\PoolCounter\PoolWorkArticleViewCurrent->doWork()
#23 /var/www/ancestry/includes/page/ParserOutputAccess.php(369): MediaWiki\PoolCounter\PoolCounterWork->execute()
#24 /var/www/ancestry/includes/page/Article.php(828): MediaWiki\Page\ParserOutputAccess->getParserOutput()
#25 /var/www/ancestry/includes/page/Article.php(545): Article->generateContentOutput()
#26 /var/www/ancestry/includes/actions/ViewAction.php(78): Article->view()
#27 /var/www/ancestry/includes/actions/ActionEntryPoint.php(732): ViewAction->show()
#28 /var/www/ancestry/includes/actions/ActionEntryPoint.php(509): MediaWiki\Actions\ActionEntryPoint->performAction()
#29 /var/www/ancestry/includes/actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest()
#30 /var/www/ancestry/includes/MediaWikiEntryPoint.php(202): MediaWiki\Actions\ActionEntryPoint->execute()
#31 /var/www/ancestry/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#32 {main}