Internal error

[34d1e48625be350adb17294e] /Module:Navbar Scribunto_LuaInterpreterNotFoundError from line 242 of /var/www/wiki/extensions/Scribunto/includes/engines/LuaSandbox/Engine.php: The luasandbox extension is not present, this engine cannot be used.

Backtrace:

#0 /var/www/wiki/extensions/Scribunto/includes/engines/LuaSandbox/Engine.php(255): Scribunto_LuaSandboxInterpreter::checkLuaSandboxVersion()
#1 /var/www/wiki/extensions/Scribunto/includes/engines/LuaSandbox/Engine.php(211): Scribunto_LuaSandboxInterpreter->__construct(Scribunto_LuaSandboxEngine, array)
#2 /var/www/wiki/extensions/Scribunto/includes/engines/LuaCommon/LuaCommon.php(120): Scribunto_LuaSandboxEngine->newInterpreter()
#3 /var/www/wiki/extensions/Scribunto/includes/engines/LuaCommon/LuaCommon.php(223): Scribunto_LuaEngine->load()
#4 /var/www/wiki/extensions/Scribunto/includes/engines/LuaCommon/LuaCommon.php(937): Scribunto_LuaEngine->getInterpreter()
#5 /var/www/wiki/extensions/Scribunto/includes/engines/LuaCommon/LuaCommon.php(924): Scribunto_LuaModule->getInitChunk()
#6 /var/www/wiki/extensions/Scribunto/includes/common/Base.php(194): Scribunto_LuaModule->validate()
#7 /var/www/wiki/extensions/Scribunto/includes/common/ScribuntoContent.php(30): ScribuntoEngineBase->validate(string, string)
#8 /var/www/wiki/extensions/Scribunto/includes/common/ScribuntoContent.php(101): ScribuntoContent->validate(Title)
#9 /var/www/wiki/includes/content/AbstractContent.php(517): ScribuntoContent->fillParserOutput(Title, integer, ParserOptions, boolean, ParserOutput)
#10 /var/www/wiki/includes/Revision/RenderedRevision.php(239): AbstractContent->getParserOutput(Title, integer, ParserOptions, boolean)
#11 /var/www/wiki/includes/Revision/RenderedRevision.php(211): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached(ScribuntoContent, boolean)
#12 /var/www/wiki/includes/Revision/RevisionRenderer.php(175): MediaWiki\Revision\RenderedRevision->getSlotParserOutput(string)
#13 /var/www/wiki/includes/Revision/RevisionRenderer.php(128): MediaWiki\Revision\RevisionRenderer->combineSlotOutput(MediaWiki\Revision\RenderedRevision, array)
#14 [internal function]: MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}(MediaWiki\Revision\RenderedRevision, array)
#15 /var/www/wiki/includes/Revision/RenderedRevision.php(175): call_user_func(Closure, MediaWiki\Revision\RenderedRevision, array)
#16 /var/www/wiki/includes/poolcounter/PoolWorkArticleView.php(194): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput()
#17 /var/www/wiki/includes/poolcounter/PoolCounterWork.php(123): PoolWorkArticleView->doWork()
#18 /var/www/wiki/includes/page/Article.php(774): PoolCounterWork->execute()
#19 /var/www/wiki/includes/actions/ViewAction.php(68): Article->view()
#20 /var/www/wiki/includes/MediaWiki.php(501): ViewAction->show()
#21 /var/www/wiki/includes/MediaWiki.php(294): MediaWiki->performAction(Article, Title)
#22 /var/www/wiki/includes/MediaWiki.php(860): MediaWiki->performRequest()
#23 /var/www/wiki/includes/MediaWiki.php(517): MediaWiki->main()
#24 /var/www/wiki/index.php(42): MediaWiki->run()
#25 {main}