Currentlly Typeclassopedia & many other pages throw an error on Firefox

[Anton-Latukha]

In brief, reports:

Math extension can not find Restbase URL. Please specify $wgMathFullRestbaseURL.

Full report

MediaWiki internal error.

Original exception: [ee6c477732ad443c708512c7] /Typeclassopedia MWException from line 200 of /var/lib/mediawiki/extensions/Math/MathRestbaseInterface.php: Math extension can not find Restbase URL. Please specify $wgMathFullRestbaseURL.
Backtrace:
#0 /var/lib/mediawiki/extensions/Math/MathRestbaseInterface.php(339): MathRestbaseInterface->getUrl(string)
#1 /var/lib/mediawiki/extensions/Math/MathRestbaseInterface.php(138): MathRestbaseInterface->getCheckRequest()
#2 /var/lib/mediawiki/extensions/Math/Math.hooks.php(385): MathRestbaseInterface::batchEvaluate(array)
#3 /usr/share/mediawiki/includes/Hooks.php(195): MathHooks::onParserAfterTidy(Parser, string)
#4 /usr/share/mediawiki/includes/parser/Parser.php(1393): Hooks::run(string, array)
#5 /usr/share/mediawiki/includes/parser/Parser.php(455): Parser->internalParseHalfParsed(string, boolean, boolean)
#6 /usr/share/mediawiki/includes/content/WikitextContent.php(331): Parser->parse(string, Title, ParserOptions, boolean, boolean, integer)
#7 /usr/share/mediawiki/includes/content/AbstractContent.php(497): WikitextContent->fillParserOutput(Title, integer, ParserOptions, boolean, ParserOutput)
#8 /usr/share/mediawiki/includes/poolcounter/PoolWorkArticleView.php(139): AbstractContent->getParserOutput(Title, integer, ParserOptions)
#9 /usr/share/mediawiki/includes/poolcounter/PoolCounterWork.php(123): PoolWorkArticleView->doWork()
#10 /usr/share/mediawiki/includes/page/Article.php(673): PoolCounterWork->execute()
#11 /usr/share/mediawiki/includes/actions/ViewAction.php(44): Article->view()
#12 /usr/share/mediawiki/includes/MediaWiki.php(493): ViewAction->show()
#13 /usr/share/mediawiki/includes/MediaWiki.php(288): MediaWiki->performAction(Article, Title)
#14 /usr/share/mediawiki/includes/MediaWiki.php(735): MediaWiki->performRequest()
#15 /usr/share/mediawiki/includes/MediaWiki.php(509): MediaWiki->main()
#16 /usr/share/mediawiki/index.php(43): MediaWiki->run()
#17 {main}

Exception caught inside exception handler: [ee6c477732ad443c708512c7] /Typeclassopedia MWException from line 200 of /var/lib/mediawiki/extensions/Math/MathRestbaseInterface.php: Math extension can not find Restbase URL. Please specify $wgMathFullRestbaseURL.
Backtrace:
#0 /var/lib/mediawiki/extensions/Math/MathRestbaseInterface.php(339): MathRestbaseInterface->getUrl(string)
#1 /var/lib/mediawiki/extensions/Math/MathRestbaseInterface.php(138): MathRestbaseInterface->getCheckRequest()
#2 /var/lib/mediawiki/extensions/Math/Math.hooks.php(385): MathRestbaseInterface::batchEvaluate(array)
#3 /usr/share/mediawiki/includes/Hooks.php(195): MathHooks::onParserAfterTidy(Parser, string)
#4 /usr/share/mediawiki/includes/parser/Parser.php(1393): Hooks::run(string, array)
#5 /usr/share/mediawiki/includes/parser/Parser.php(455): Parser->internalParseHalfParsed(string, boolean, boolean)
#6 /usr/share/mediawiki/includes/cache/MessageCache.php(1108): Parser->parse(string, Title, ParserOptions, boolean)
#7 /usr/share/mediawiki/includes/Message.php(1159): MessageCache->parse(string, Title, boolean, boolean, Language)
#8 /usr/share/mediawiki/includes/Message.php(824): Message->parseText(string)
#9 /usr/share/mediawiki/includes/Message.php(880): Message->toString()
#10 /usr/share/mediawiki/includes/skins/Skin.php(620): Message->parse()
#11 /usr/share/mediawiki/includes/skins/SkinTemplate.php(459): Skin->printSource()
#12 /usr/share/mediawiki/includes/skins/SkinTemplate.php(246): SkinTemplate->prepareQuickTemplate(OutputPage)
#13 /usr/share/mediawiki/includes/OutputPage.php(2335): SkinTemplate->outputPage()
#14 /usr/share/mediawiki/includes/exception/MWException.php(206): OutputPage->output()
#15 /usr/share/mediawiki/includes/exception/MWException.php(246): MWException->reportHTML()
#16 /usr/share/mediawiki/includes/exception/MWExceptionHandler.php(69): MWException->report()
#17 /usr/share/mediawiki/includes/exception/MWExceptionHandler.php(180): MWExceptionHandler::report(MWException)
#18 /usr/share/mediawiki/includes/MediaWiki.php(518): MWExceptionHandler::handleException(MWException)
#19 /usr/share/mediawiki/index.php(43): MediaWiki->run()
#20 {main}

The saved page:
page.tar.gz

[hgolden]

I have been reading the RESTbase installation instructions, which I don't find that clear, so I don't feel comfortable with just trying to follow them on the production wiki. Instead, I will test them on my own computer's mediawiki-1.31.1 (LTS) installation to make sure I can set RESTbase up properly first. MediaWiki has a lot of Easter eggs! I am starting to feel like I'm going down the rabbit hole.

[Anton-Latukha]

Yes quite a broad topic. Ironically MediaWiki engine keeps it's own big Wiki.
It is a very broad and deep topic.
One rabbit hole at a time.

Thank you @hgolden

Please, if you can, keep relative track of your setup somewhere on GitHub/GitLab or gitlab.haskell.org.

[gbaz]

I think this is resolved?

[hgolden]

@gbaz, no I still need to work on this. I had overlooked it. Sorry! It appears that the Typeclassopedia article displays correctly, but the RESTbase extension may be needed for the visual editor or something else (I still don't have a good understanding of RESTbase and its use). I will work on this starting tomorrow (2019-09-04), implementing it first on my local machine to avoid damaging the production wiki since I need to experiment first.

[Anton-Latukha]

Updated.

Overall - I'd would not hurry with it, lowering priority, but make a good diagnose, and solution probably must be simple.

It indeed happens particularly on Firefox (even in clean safe-mode of a browser).
Also I use NixOS - that also is special about setup and can be somehow related, like something searching hardcoded /... path of something.

[Anton-Latukha]

@hgolden
If you would direct me roughly what to look for - I would know what to look to profile, and return with results.
If you do not know the cause - then I would learn how to do general web-profiling procedure.

[hgolden]

@Anton-Latukha @gbaz I am going to implement RESTBase using the SQLite backend on my own desktop computer first. At the same time I will upgrade to the latest LTS version. I will test everything as well as I can doing this. Only then will I update the production wiki. I would be happy to allow each of you to run your own tests on my machine to get your concurrence before updating the production wiki. I will set up a dynamic DNS to allow your access once it is ready to test. (I have just upgraded my desktop with more RAM, disk and CPU cores so I can do the work locally.)

[Anton-Latukha]

You are serious about this stuff.

I would test how I can.

But as I said, I were a contributor on Arch Wiki pages & learned back then that in depth, and learned MediaWiki and setted-it up locally with some number of plugins. It was years ago.

I can take upon an effort to move your configuration to Ansible, or contained build, or even after that - NixOS, or even try Guix. If talking about the community - I can clean-up my other efforts & devote time to manage NixOS configs for Haskell MediaWiki, I would need to write management of in nixpkgs at first, because there is MediaWiki package, but there is no automatic server deployment options written for it. I think MediaWiki inside is pretty stateful, not including the data, so writing automation for it in NixOS can take effort.

But at the time - I would test.

[hgolden]

I willl include RESTbase in the dockerized upgrade to MediaWiki-1.35.2 I am working on presently.