==== Error ====
* mwversion: ``
* reqId: ``
```name=normalized_message
```
```name=exception.trace,lines=10
from /srv/mediawiki/php-master/includes/cache/MessageCache.php(937)
#0 /srv/mediawiki/php-master/includes/language/Message.php(1479): MessageCache->get(NULL, boolean, LanguageEn)
#1 /srv/mediawiki/php-master/includes/language/Message.php(963): Message->fetchMessage()
#2 /srv/mediawiki/php-master/includes/language/Message.php(1059): Message->format(string)
#3 /srv/mediawiki/php-master/includes/skins/SkinTemplate.php(1138): Message->text()
#4 /srv/mediawiki/php-master/includes/skins/SkinTemplate.php(1381): SkinTemplate->getSkinNavOverrideableLabel(string)
#5 /srv/mediawiki/php-master/includes/skins/SkinTemplate.php(781): SkinTemplate->buildContentNavigationUrlsInternal()
#6 /srv/mediawiki/php-master/includes/skins/SkinTemplate.php(201): SkinTemplate->getPortletsTemplateData()
#7 /srv/mediawiki/php-master/includes/skins/SkinMustache.php(81): SkinTemplate->getTemplateData()
#8 /srv/mediawiki/php-master/skins/Vector/includes/SkinVector.php(589): SkinMustache->getTemplateData()
#9 /srv/mediawiki/php-master/includes/skins/SkinMustache.php(58): SkinVector->getTemplateData()
#10 /srv/mediawiki/php-master/skins/Vector/includes/SkinVector.php(465): SkinMustache->generateHTML()
#11 /srv/mediawiki/php-master/includes/skins/SkinTemplate.php(149): SkinVector->generateHTML()
#12 /srv/mediawiki/php-master/includes/OutputPage.php(2723): SkinTemplate->outputPage()
#13 /srv/mediawiki/php-master/includes/MediaWiki.php(923): OutputPage->output(boolean)
#14 /srv/mediawiki/php-master/includes/MediaWiki.php(936): MediaWiki::{closure}()
#15 /srv/mediawiki/php-master/includes/MediaWiki.php(563): MediaWiki->main()
#16 /srv/mediawiki/php-master/index.php(53): MediaWiki->run()
#17 /srv/mediawiki/php-master/index.php(46): wfIndexMain()
#18 /srv/mediawiki/w/index.php(3): require(string)
#19 {main}
```
==== Impact ====
==== Notes ====