[25812795f3df3a787b1f8e32] /wiki/%E7%87%95%E4%BA%91%E7%BB%87%E9%80%A0%E5%B1%80_%E5%8D%AF%E5%85%94%E8%BF%8E%E6%98%A5_%E5%A5%B3%E7%AB%A5%E6%AC%BE Wikimedia\Rdbms\DBQueryDisconnectedError: A database query error has occurred. Did you forget to run your application's database schema updater after upgrading or after adding a new extension?

Please see https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Upgrading and https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:How_to_debug for more information.

A connection error occurred during a query.
Query: SELECT lc_value FROM `l10n_cache` WHERE lc_lang = 'zh-hk' AND lc_key = 'messages:城市' LIMIT 1
Function: LCStoreDB::get
Error: 2006 MySQL server has gone away

Backtrace:

from /data/wwwroot/w/includes/libs/rdbms/database/Database.php(1616)
#0 /data/wwwroot/w/includes/libs/rdbms/database/Database.php(1602): Wikimedia\Rdbms\Database->getQueryException()
#1 /data/wwwroot/w/includes/libs/rdbms/database/Database.php(1576): Wikimedia\Rdbms\Database->getQueryExceptionAndLog()
#2 /data/wwwroot/w/includes/libs/rdbms/database/Database.php(952): Wikimedia\Rdbms\Database->reportQueryError()
#3 /data/wwwroot/w/includes/libs/rdbms/database/Database.php(1711): Wikimedia\Rdbms\Database->query()
#4 /data/wwwroot/w/includes/libs/rdbms/database/Database.php(1664): Wikimedia\Rdbms\Database->select()
#5 /data/wwwroot/w/includes/libs/rdbms/database/DBConnRef.php(103): Wikimedia\Rdbms\Database->selectField()
#6 /data/wwwroot/w/includes/libs/rdbms/database/DBConnRef.php(313): Wikimedia\Rdbms\DBConnRef->__call()
#7 /data/wwwroot/w/includes/language/LCStoreDB.php(66): Wikimedia\Rdbms\DBConnRef->selectField()
#8 /data/wwwroot/w/includes/language/LocalisationCache.php(469): LCStoreDB->get()
#9 /data/wwwroot/w/includes/language/LocalisationCache.php(352): LocalisationCache->loadSubitem()
#10 /data/wwwroot/w/includes/language/MessageCache.php(722): LocalisationCache->getSubitem()
#11 /data/wwwroot/w/includes/language/MessageCache.php(1235): MessageCache->isMainCacheable()
#12 /data/wwwroot/w/includes/language/MessageCache.php(1163): MessageCache->getMsgFromNamespace()
#13 /data/wwwroot/w/includes/language/MessageCache.php(1097): MessageCache->getMessageForLang()
#14 /data/wwwroot/w/includes/language/MessageCache.php(1039): MessageCache->getMessageFromFallbackChain()
#15 /data/wwwroot/w/includes/language/Message.php(1473): MessageCache->get()
#16 /data/wwwroot/w/includes/language/Message.php(1098): Message->fetchMessage()
#17 /data/wwwroot/w/includes/skins/Skin.php(1606): Message->exists()
#18 /data/wwwroot/w/includes/skins/Skin.php(1552): Skin->addToSidebarPlain()
#19 /data/wwwroot/w/includes/skins/Skin.php(1495): Skin->addToSidebar()
#20 /data/wwwroot/w/includes/libs/objectcache/wancache/WANObjectCache.php(1689): Skin->{closure}()
#21 /data/wwwroot/w/includes/libs/objectcache/wancache/WANObjectCache.php(1522): WANObjectCache->fetchOrRegenerate()
#22 /data/wwwroot/w/includes/skins/Skin.php(1524): WANObjectCache->getWithSetCallback()
#23 /data/wwwroot/w/includes/skins/SkinTemplate.php(792): Skin->buildSidebar()
#24 /data/wwwroot/w/includes/skins/SkinTemplate.php(762): SkinTemplate->getPortletsTemplateData()
#25 /data/wwwroot/w/includes/skins/Skin.php(667): SkinTemplate->getCategoryLinks()
#26 /data/wwwroot/w/includes/skins/SkinTemplate.php(259): Skin->getCategories()
#27 /data/wwwroot/w/skins/chameleon/src/Chameleon.php(111): SkinTemplate->prepareQuickTemplate()
#28 /data/wwwroot/w/includes/skins/SkinTemplate.php(146): Skins\Chameleon\Chameleon->prepareQuickTemplate()
#29 /data/wwwroot/w/includes/skins/SkinTemplate.php(177): SkinTemplate->generateHTML()
#30 /data/wwwroot/w/includes/OutputPage.php(2876): SkinTemplate->outputPage()
#31 /data/wwwroot/w/includes/MediaWiki.php(922): OutputPage->output()
#32 /data/wwwroot/w/includes/MediaWiki.php(562): MediaWiki->main()
#33 /data/wwwroot/w/index.php(50): MediaWiki->run()
#34 /data/wwwroot/w/index.php(46): wfIndexMain()
#35 {main}