Hi!
Recently I upgraded mediawiki from 1.39.1 to 1.39.3. Initially there was no problems but Now I'm getting this error on most of my pages:
Error: Call to undefined function MediaWiki\Extension\Scribunto\Engines\LuaStandalone\shell_exec()
Backtrace:
from /home/escforumwiki/public_html/extensions/Scribunto/includes/engines/LuaStandalone/LuaStandaloneEngine.php(89)
#0 /home/escforumwiki/public_html/extensions/Scribunto/includes/engines/LuaStandalone/LuaStandaloneEngine.php(49): MediaWiki\Extension\Scribunto\Engines\LuaStandalone\LuaStandaloneEngine->getClockTick()
#1 /home/escforumwiki/public_html/extensions/Scribunto/includes/Hooks.php(305): MediaWiki\Extension\Scribunto\Engines\LuaStandalone\LuaStandaloneEngine->reportLimitData(ParserOutput)
#2 /home/escforumwiki/public_html/includes/HookContainer/HookContainer.php(338): MediaWiki\Extension\Scribunto\Hooks::reportLimitData(Parser, ParserOutput)
#3 /home/escforumwiki/public_html/includes/HookContainer/HookContainer.php(137): MediaWiki\HookContainer\HookContainer->callLegacyHook(string, array, array, array)
#4 /home/escforumwiki/public_html/includes/HookContainer/HookRunner.php(2946): MediaWiki\HookContainer\HookContainer->run(string, array)
#5 /home/escforumwiki/public_html/includes/parser/Parser.php(828): MediaWiki\HookContainer\HookRunner->onParserLimitReportPrepare(Parser, ParserOutput)
#6 /home/escforumwiki/public_html/includes/parser/Parser.php(767): Parser->makeLimitReport()
#7 /home/escforumwiki/public_html/includes/content/WikitextContentHandler.php(301): Parser->parse(string, Title, ParserOptions, boolean, boolean, integer)
#8 /home/escforumwiki/public_html/includes/content/ContentHandler.php(1721): WikitextContentHandler->fillParserOutput(WikitextContent, MediaWiki\Content\Renderer\ContentParseParams, ParserOutput)
#9 /home/escforumwiki/public_html/includes/content/Renderer/ContentRenderer.php(47): ContentHandler->getParserOutput(WikitextContent, MediaWiki\Content\Renderer\ContentParseParams)
#10 /home/escforumwiki/public_html/includes/Revision/RenderedRevision.php(266): MediaWiki\Content\Renderer\ContentRenderer->getParserOutput(WikitextContent, Title, integer, ParserOptions, boolean)
#11 /home/escforumwiki/public_html/includes/Revision/RenderedRevision.php(237): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached(WikitextContent, boolean)
#12 /home/escforumwiki/public_html/includes/Revision/RevisionRenderer.php(221): MediaWiki\Revision\RenderedRevision->getSlotParserOutput(string, array)
#13 /home/escforumwiki/public_html/includes/Revision/RevisionRenderer.php(158): MediaWiki\Revision\RevisionRenderer->combineSlotOutput(MediaWiki\Revision\RenderedRevision, array)
#14 [internal function]: MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}(MediaWiki\Revision\RenderedRevision, array)
#15 /home/escforumwiki/public_html/includes/Revision/RenderedRevision.php(199): call_user_func(Closure, MediaWiki\Revision\RenderedRevision, array)
#16 /home/escforumwiki/public_html/includes/poolcounter/PoolWorkArticleView.php(91): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput()
#17 /home/escforumwiki/public_html/includes/poolcounter/PoolWorkArticleViewCurrent.php(97): PoolWorkArticleView->renderRevision()
#18 /home/escforumwiki/public_html/includes/poolcounter/PoolCounterWork.php(162): PoolWorkArticleViewCurrent->doWork()
#19 /home/escforumwiki/public_html/includes/page/ParserOutputAccess.php(299): PoolCounterWork->execute()
#20 /home/escforumwiki/public_html/includes/page/Article.php(714): MediaWiki\Page\ParserOutputAccess->getParserOutput(WikiPage, ParserOptions, MediaWiki\Revision\RevisionStoreCacheRecord, integer)
#21 /home/escforumwiki/public_html/includes/page/Article.php(528): Article->generateContentOutput(User, ParserOptions, integer, OutputPage, array)
#22 /home/escforumwiki/public_html/includes/actions/ViewAction.php(78): Article->view()
#23 /home/escforumwiki/public_html/includes/MediaWiki.php(542): ViewAction->show()
#24 /home/escforumwiki/public_html/includes/MediaWiki.php(322): MediaWiki->performAction(Article, Title)
#25 /home/escforumwiki/public_html/includes/MediaWiki.php(904): MediaWiki->performRequest()
#26 /home/escforumwiki/public_html/includes/MediaWiki.php(562): MediaWiki->main()
#27 /home/escforumwiki/public_html/index.php(50): MediaWiki->run()
#28 /home/escforumwiki/public_html/index.php(46): wfIndexMain()
#29 {main}