MediaWiki internal error.

Original exception: [e596d7748dbdbb3175753b8a] /Junior_Council Wikimedia\Rdbms\DBQueryError from line 1149 of /srv/www/wiki/includes/libs/rdbms/database/Database.php: A database query error has occurred. Did you forget to run your application's database schema updater after upgrading?
Query: SELECT page_id,page_namespace,page_title,page_restrictions,page_is_redirect,page_is_new,page_random,page_touched,page_links_updated,page_latest,page_len,page_content_model FROM `page` WHERE page_namespace = '0' AND page_title = 'Junior_Council' LIMIT 1
Function: WikiPage::pageData
Error: 1146 Table 'euswiki.page' doesn't exist (localhost)

Backtrace:
#0 /srv/www/wiki/includes/libs/rdbms/database/Database.php(979): Wikimedia\Rdbms\Database->reportQueryError(string, integer, string, string, boolean)
#1 /srv/www/wiki/includes/libs/rdbms/database/Database.php(1343): Wikimedia\Rdbms\Database->query(string, string)
#2 /srv/www/wiki/includes/libs/rdbms/database/Database.php(1411): Wikimedia\Rdbms\Database->select(string, array, array, string, array, array)
#3 /srv/www/wiki/includes/page/WikiPage.php(331): Wikimedia\Rdbms\Database->selectRow(string, array, array, string, array)
#4 /srv/www/wiki/includes/page/WikiPage.php(350): WikiPage->pageData(Wikimedia\Rdbms\DatabaseMysqli, array, array)
#5 /srv/www/wiki/includes/page/WikiPage.php(386): WikiPage->pageDataFromTitle(Wikimedia\Rdbms\DatabaseMysqli, Title, array)
#6 /srv/www/wiki/includes/page/WikiPage.php(470): WikiPage->loadPageData()
#7 /srv/www/wiki/includes/page/WikiPage.php(511): WikiPage->exists()
#8 /srv/www/wiki/includes/page/WikiPage.php(232): WikiPage->getContentModel()
#9 /srv/www/wiki/includes/page/WikiPage.php(219): WikiPage->getContentHandler()
#10 /srv/www/wiki/includes/actions/Action.php(96): WikiPage->getActionOverrides()
#11 /srv/www/wiki/includes/actions/Action.php(154): Action::factory(string, WikiPage, RequestContext)
#12 /srv/www/wiki/includes/MediaWiki.php(155): Action::getActionName(RequestContext)
#13 /srv/www/wiki/includes/MediaWiki.php(768): MediaWiki->getAction()
#14 /srv/www/wiki/includes/MediaWiki.php(523): MediaWiki->main()
#15 /srv/www/wiki/index.php(43): MediaWiki->run()
#16 {main}

Exception caught inside exception handler: [e596d7748dbdbb3175753b8a] /Junior_Council Wikimedia\Rdbms\DBQueryError from line 1149 of /srv/www/wiki/includes/libs/rdbms/database/Database.php: A database query error has occurred. Did you forget to run your application's database schema updater after upgrading?
Query: SELECT page_title,page_latest FROM `page` WHERE page_is_redirect = '0' AND page_namespace = '8' AND (page_title NOT LIKE '%/%' ESCAPE '`' ) AND (page_len > 10000)
Function: MessageCache::loadFromDB(en)-big
Error: 1146 Table 'euswiki.page' doesn't exist (localhost)

Backtrace:
#0 /srv/www/wiki/includes/libs/rdbms/database/Database.php(979): Wikimedia\Rdbms\Database->reportQueryError(string, integer, string, string, boolean)
#1 /srv/www/wiki/includes/libs/rdbms/database/Database.php(1343): Wikimedia\Rdbms\Database->query(string, string)
#2 /srv/www/wiki/includes/cache/MessageCache.php(512): Wikimedia\Rdbms\Database->select(string, array, array, string)
#3 /srv/www/wiki/includes/cache/MessageCache.php(426): MessageCache->loadFromDB(string, NULL)
#4 /srv/www/wiki/includes/cache/MessageCache.php(350): MessageCache->loadFromDBWithLock(string, array, NULL)
#5 /srv/www/wiki/includes/cache/MessageCache.php(991): MessageCache->load(string)
#6 /srv/www/wiki/includes/cache/MessageCache.php(920): MessageCache->getMsgFromNamespace(string, string)
#7 /srv/www/wiki/includes/cache/MessageCache.php(888): MessageCache->getMessageForLang(LanguageEn, string, boolean, array)
#8 /srv/www/wiki/includes/cache/MessageCache.php(828): MessageCache->getMessageFromFallbackChain(LanguageEn, string, boolean)
#9 /srv/www/wiki/includes/Message.php(1275): MessageCache->get(string, boolean, LanguageEn)
#10 /srv/www/wiki/includes/Message.php(842): Message->fetchMessage()
#11 /srv/www/wiki/includes/Message.php(934): Message->toString(string)
#12 /srv/www/wiki/includes/OutputPage.php(950): Message->text()
#13 /srv/www/wiki/includes/OutputPage.php(997): OutputPage->setHTMLTitle(Message)
#14 /srv/www/wiki/includes/OutputPage.php(2478): OutputPage->setPageTitle(string)
#15 /srv/www/wiki/includes/exception/MWExceptionRenderer.php(126): OutputPage->prepareErrorPage(string)
#16 /srv/www/wiki/includes/exception/MWExceptionRenderer.php(54): MWExceptionRenderer::reportHTML(Wikimedia\Rdbms\DBQueryError)
#17 /srv/www/wiki/includes/exception/MWExceptionHandler.php(75): MWExceptionRenderer::output(Wikimedia\Rdbms\DBQueryError, integer)
#18 /srv/www/wiki/includes/exception/MWExceptionHandler.php(130): MWExceptionHandler::report(Wikimedia\Rdbms\DBQueryError)
#19 /srv/www/wiki/includes/MediaWiki.php(550): MWExceptionHandler::handleException(Wikimedia\Rdbms\DBQueryError)
#20 /srv/www/wiki/index.php(43): MediaWiki->run()
#21 {main}