python ? PHP you mean? :-)
I have exactly the same problem with :
MediaWiki : 1.39.3
PHP: 8.2.7 (fpm-fcgi)
OS : Fedora 38
Warn :
Warning: Attempt to read property "tabsData" on array in /usr/share/mediawiki/extensions/Tabs/includes/Tabs.php on line 228
Warning: Trying to access array offset on value of type null in /usr/share/mediawiki/extensions/Tabs/includes/Tabs.php on line 228
Warning: Attempt to read property "tabsData" on array in /usr/share/mediawiki/extensions/Tabs/includes/Tabs.php on line 229
Warning: Trying to access array offset on value of type null in /usr/share/mediawiki/extensions/Tabs/includes/Tabs.php on line 229
Internal error :
[ZJGtbOzlGDYpFErl95X7PQAAAEE] /wiki/index.php?title=test Error: Attempt to modify property "tabsData" on array
Backtrace:
from /usr/share/mediawiki/extensions/Tabs/includes/Tabs.php(232)
#0 /usr/share/mediawiki/includes/parser/Parser.php(4023): Tabs->renderTabs()
#1 /usr/share/mediawiki/includes/parser/PPFrame_Hash.php(353): Parser->extensionSubstitution()
#2 /usr/share/mediawiki/includes/parser/Parser.php(2955): PPFrame_Hash->expand()
#3 /usr/share/mediawiki/includes/parser/Parser.php(1610): Parser->replaceVariables()
#4 /usr/share/mediawiki/includes/parser/Parser.php(724): Parser->internalParse()
#5 /usr/share/mediawiki/includes/content/WikitextContentHandler.php(301): Parser->parse()
#6 /usr/share/mediawiki/includes/content/ContentHandler.php(1720): WikitextContentHandler->fillParserOutput()
#7 /usr/share/mediawiki/includes/content/Renderer/ContentRenderer.php(47): ContentHandler->getParserOutput()
#8 /usr/share/mediawiki/includes/Revision/RenderedRevision.php(265): MediaWiki\Content\Renderer\ContentRenderer->getParserOutput()
#9 /usr/share/mediawiki/includes/Revision/RenderedRevision.php(237): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached()
#10 /usr/share/mediawiki/includes/Revision/RevisionRenderer.php(221): MediaWiki\Revision\RenderedRevision->getSlotParserOutput()
#11 /usr/share/mediawiki/includes/Revision/RevisionRenderer.php(158): MediaWiki\Revision\RevisionRenderer->combineSlotOutput()
#12 [internal function]: MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}()
#13 /usr/share/mediawiki/includes/Revision/RenderedRevision.php(199): call_user_func()
#14 /usr/share/mediawiki/includes/poolcounter/PoolWorkArticleView.php(91): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput()
#15 /usr/share/mediawiki/includes/poolcounter/PoolWorkArticleViewCurrent.php(97): PoolWorkArticleView->renderRevision()
#16 /usr/share/mediawiki/includes/poolcounter/PoolCounterWork.php(162): PoolWorkArticleViewCurrent->doWork()
#17 /usr/share/mediawiki/includes/page/ParserOutputAccess.php(299): PoolCounterWork->execute()
#18 /usr/share/mediawiki/includes/page/Article.php(713): MediaWiki\Page\ParserOutputAccess->getParserOutput()
#19 /usr/share/mediawiki/includes/page/Article.php(528): Article->generateContentOutput()
#20 /usr/share/mediawiki/includes/actions/ViewAction.php(78): Article->view()
#21 /usr/share/mediawiki/includes/MediaWiki.php(542): ViewAction->show()
#22 /usr/share/mediawiki/includes/MediaWiki.php(322): MediaWiki->performAction()
#23 /usr/share/mediawiki/includes/MediaWiki.php(904): MediaWiki->performRequest()
#24 /usr/share/mediawiki/includes/MediaWiki.php(562): MediaWiki->main()
#25 /usr/share/mediawiki/index.php(50): MediaWiki->run()
#26 /usr/share/mediawiki/index.php(46): wfIndexMain()
#27 {main}