Error
Request ID: W8vJyQpAMFsAAFsjYAAAAAAG
Exception from line 1539 of /srv/mediawiki/php-1.32.0-wmf.26/includes/resourceloader/ResourceLoader.php: JSON serialization of config data failed. This usually means the config data is not valid UTF-8.
#0 /srv/mediawiki/php-1.32.0-wmf.26/includes/resourceloader/ResourceLoaderClientHtml.php(283): ResourceLoader::makeConfigSetScript(array) #1 /srv/mediawiki/php-1.32.0-wmf.26/includes/OutputPage.php(3091): ResourceLoaderClientHtml->getHeadHtml() #2 /srv/mediawiki/php-1.32.0-wmf.26/includes/skins/SkinTemplate.php(472): OutputPage->headElement(SkinVector) #3 /srv/mediawiki/php-1.32.0-wmf.26/includes/skins/SkinTemplate.php(225): SkinTemplate->prepareQuickTemplate() #4 /srv/mediawiki/php-1.32.0-wmf.26/includes/OutputPage.php(2597): SkinTemplate->outputPage() #5 /srv/mediawiki/php-1.32.0-wmf.26/includes/MediaWiki.php(867): OutputPage->output(boolean) #6 /srv/mediawiki/php-1.32.0-wmf.26/includes/MediaWiki.php(879): Closure$MediaWiki::main() #7 /srv/mediawiki/php-1.32.0-wmf.26/includes/MediaWiki.php(517): MediaWiki->main() #8 /srv/mediawiki/php-1.32.0-wmf.26/index.php(42): MediaWiki->run()
Impact
Several pages on my.wikipedia.org and ml.wikipedia.org cannot be viewed. For example: https://my.wikipedia.org/wiki/Wikipedia:NOTWIKIA and https://ml.wikipedia.org/wiki/വിക്കിപീഡിയ:NOTLINKEDIN.
Triaging as UBN because this is a fatal error on a regular user request that is a risk for HTTP 5xx alarms, and also because it makes some of our primary content entirely inaccessible.