A 500 is returned from zero.wikimedia.org for any request for a page in the Zero namespace.
PHP Fatal Error from line 734 of /srv/mediawiki/php-1.32.0-wmf.18/extensions/JsonConfig/includes/JCSingleton.php: Call to undefined method ZeroBanner\ZeroConfig::getLicenseObject()
{
"fatal_exception":
{
"class":"ErrorException",
"message":"PHP Fatal Error: Call to undefined method ZeroBanner\\ZeroConfig::getLicenseObject()",
"code":16777217,
"file":"/srv/mediawiki/php-1.32.0-wmf.18/extensions/JsonConfig/includes/JCSingleton.php",
"line":734,
"trace":"#0 /srv/mediawiki/php-1.32.0-wmf.18/extensions/JsonConfig/includes/JCSingleton.php(734): NO_FUNCTION_GIVEN()
}
}[721897cd88e5c4299cfcf548] /wiki/Zero:Foo Error from line 734 of /vagrant/mediawiki/extensions/JsonConfig/includes/JCSingleton.php: Call to undefined method ZeroBanner\ZeroConfig::getLicenseObject()
Backtrace:
#0 /vagrant/mediawiki/extensions/JsonConfig/includes/JCSingleton.php(824): JsonConfig\JCSingleton::getTitleLicenseCode(JsonConfig\JCTitle)
#1 /vagrant/mediawiki/includes/Hooks.php(174): JsonConfig\JCSingleton::onSkinCopyrightFooter(Title, string, string, string, boolean)
#2 /vagrant/mediawiki/includes/Hooks.php(202): Hooks::callHook(string, array, array, NULL)
#3 /vagrant/mediawiki/includes/skins/Skin.php(855): Hooks::run(string, array)
#4 /vagrant/mediawiki/includes/skins/SkinTemplate.php(397): Skin->getCopyright()
#5 /vagrant/mediawiki/includes/skins/SkinTemplate.php(225): SkinTemplate->prepareQuickTemplate()
#6 /vagrant/mediawiki/includes/OutputPage.php(2406): SkinTemplate->outputPage()
#7 /vagrant/mediawiki/includes/MediaWiki.php(875): OutputPage->output(boolean)
#8 /vagrant/mediawiki/includes/MediaWiki.php(887): MediaWiki->{closure}()
#9 /vagrant/mediawiki/includes/MediaWiki.php(525): MediaWiki->main()
#10 /vagrant/mediawiki/index.php(42): MediaWiki->run()
#11 /var/www/w/index.php(5): require(string)
#12 {main}