Warning: Error while sending QUERY packet. PID=1158 in /var/lib/mediawiki/includes/libs/rdbms/database/DatabaseMysqli.php on line 46

Warning: Error while sending QUERY packet. PID=1158 in /var/lib/mediawiki/includes/libs/rdbms/database/DatabaseMysqli.php on line 46
Internal error - Barikadopēdija

[41c7720045cb0604b78fb142] /index.php?title=Special:UserLogin&returnto=A.+I%C5%A1%C4%8Denko Wikimedia\Rdbms\DBQueryError from line 1496 of /var/lib/mediawiki/includes/libs/rdbms/database/Database.php: A connection error occurred.
Query: SELECT lc_value FROM `wik2l10n_cache` WHERE lc_lang = 'lv' AND lc_key = 'specialPageAliases' LIMIT 1
Function: LCStoreDB::get
Error: 2006 MySQL server has gone away (localhost)

Backtrace:

#0 /var/lib/mediawiki/includes/libs/rdbms/database/Database.php(1466): Wikimedia\Rdbms\Database->makeQueryException(string, integer, string, string)
#1 /var/lib/mediawiki/includes/libs/rdbms/database/Database.php(1226): Wikimedia\Rdbms\Database->reportQueryError(string, integer, string, string, boolean)
#2 /var/lib/mediawiki/includes/libs/rdbms/database/Database.php(1693): Wikimedia\Rdbms\Database->query(string, string)
#3 /var/lib/mediawiki/includes/libs/rdbms/database/Database.php(1518): Wikimedia\Rdbms\Database->select(string, string, array, string, array, array)
#4 /var/lib/mediawiki/includes/cache/localisation/LCStoreDB.php(61): Wikimedia\Rdbms\Database->selectField(string, string, array, string)
#5 /var/lib/mediawiki/includes/cache/localisation/LocalisationCache.php(355): LCStoreDB->get(string, string)
#6 /var/lib/mediawiki/includes/cache/localisation/LocalisationCache.php(273): LocalisationCache->loadItem(string, string)
#7 /var/lib/mediawiki/languages/Language.php(3270): LocalisationCache->getItem(string, string)
#8 /var/lib/mediawiki/includes/specialpage/SpecialPageFactory.php(295): Language->getSpecialPageAliases()
#9 /var/lib/mediawiki/includes/specialpage/SpecialPageFactory.php(354): MediaWiki\Special\SpecialPageFactory->getAliasList()
#10 /var/lib/mediawiki/includes/Title.php(1131): MediaWiki\Special\SpecialPageFactory->resolveAlias(string)
#11 /var/lib/mediawiki/includes/MediaWiki.php(190): Title->isSpecial(string)
#12 /var/lib/mediawiki/includes/MediaWiki.php(860): MediaWiki->performRequest()
#13 /var/lib/mediawiki/includes/MediaWiki.php(517): MediaWiki->main()
#14 /var/lib/mediawiki/index.php(46): MediaWiki->run()
#15 {main}