MediaWiki internal error.

Original exception: [805b77479f1c5a868e0e8cf3] /Speci%C3%A1ln%C3%AD:Pr%C3%A1va_u%C5%BEivatelsk%C3%BDch_skupin DBQueryError from line 934 of /var/www/clients/client1/web9/web/includes/db/Database.php: A database error has occurred. Did you forget to run maintenance/update.php after upgrading? See: https://www.mediawiki.org/wiki/Manual:Upgrading#Run_the_update_script
Query: SELECT rev_id,rev_page,rev_text_id,rev_timestamp,rev_comment,rev_user_text,rev_user,rev_minor_edit,rev_deleted,rev_len,rev_parent_id,rev_sha1,rev_content_format,rev_content_model,page_namespace,page_title,page_id,page_latest,page_is_redirect,page_len,user_name FROM `sc2_revision` INNER JOIN `sc2_page` ON ((page_id = rev_page)) LEFT JOIN `sc2_user` ON ((rev_user != 0) AND (user_id = rev_user)) WHERE page_namespace = '8' AND page_title = 'Listgrouprights-helppage' AND (rev_id=page_latest) LIMIT 1
Function: Revision::fetchFromConds
Error: 1054 Unknown column 'rev_sha1' in 'field list' (localhost)

Backtrace:
#0 /var/www/clients/client1/web9/web/includes/db/Database.php(901): DatabaseBase->reportQueryError(string, integer, string, string, boolean)
#1 /var/www/clients/client1/web9/web/includes/db/Database.php(1234): DatabaseBase->query(string, string)
#2 /var/www/clients/client1/web9/web/includes/Revision.php(401): DatabaseBase->select(array, array, array, string, array, array)
#3 /var/www/clients/client1/web9/web/includes/Revision.php(343): Revision::fetchFromConds(DatabaseMysqli, array, integer)
#4 /var/www/clients/client1/web9/web/includes/Revision.php(130): Revision::loadFromConds(DatabaseMysqli, array, integer)
#5 /var/www/clients/client1/web9/web/includes/parser/Parser.php(3946): Revision::newFromTitle(Title)
#6 [internal function]: Parser->statelessFetchRevision(Title, Parser)
#7 /var/www/clients/client1/web9/web/includes/parser/Parser.php(3930): call_user_func(array, Title, Parser)
#8 /var/www/clients/client1/web9/web/includes/parser/Parser.php(4022): Parser->fetchCurrentRevisionOfTitle(Title)
#9 [internal function]: Parser->statelessFetchTemplate(Title, Parser)
#10 /var/www/clients/client1/web9/web/includes/parser/Parser.php(3957): call_user_func(array, Title, Parser)
#11 /var/www/clients/client1/web9/web/includes/parser/Parser.php(3893): Parser->fetchTemplateAndTitle(Title)
#12 /var/www/clients/client1/web9/web/includes/parser/Parser.php(3649): Parser->getTemplateDom(Title)
#13 /var/www/clients/client1/web9/web/includes/parser/Preprocessor_DOM.php(1175): Parser->braceSubstitution(array, PPFrame_DOM)
#14 /var/www/clients/client1/web9/web/includes/parser/Parser.php(3380): PPFrame_DOM->expand(PPNode_DOM, integer)
#15 /var/www/clients/client1/web9/web/includes/parser/Parser.php(1261): Parser->replaceVariables(string)
#16 /var/www/clients/client1/web9/web/includes/parser/Parser.php(452): Parser->internalParse(string)
#17 /var/www/clients/client1/web9/web/includes/OutputPage.php(1739): Parser->parse(string, Title, ParserOptions, boolean, boolean, NULL)
#18 /var/www/clients/client1/web9/web/includes/OutputPage.php(1681): OutputPage->addWikiTextTitle(string, Title, boolean, boolean, boolean)
#19 /var/www/clients/client1/web9/web/includes/OutputPage.php(4012): OutputPage->addWikiText(string)
#20 /var/www/clients/client1/web9/web/includes/specialpage/SpecialPage.php(596): OutputPage->wrapWikiMsg(string, string)
#21 /var/www/clients/client1/web9/web/includes/specials/SpecialListgrouprights.php(42): SpecialPage->outputHeader()
#22 /var/www/clients/client1/web9/web/includes/specialpage/SpecialPage.php(522): SpecialListGroupRights->execute(NULL)
#23 /var/www/clients/client1/web9/web/includes/specialpage/SpecialPageFactory.php(577): SpecialPage->run(NULL)
#24 /var/www/clients/client1/web9/web/includes/MediaWiki.php(282): SpecialPageFactory::executePath(Title, RequestContext)
#25 /var/www/clients/client1/web9/web/includes/MediaWiki.php(735): MediaWiki->performRequest()
#26 /var/www/clients/client1/web9/web/includes/MediaWiki.php(509): MediaWiki->main()
#27 /var/www/clients/client1/web9/web/index.php(43): MediaWiki->run()
#28 {main}

Exception caught inside exception handler: [805b77479f1c5a868e0e8cf3] /Speci%C3%A1ln%C3%AD:Pr%C3%A1va_u%C5%BEivatelsk%C3%BDch_skupin DBQueryError from line 934 of /var/www/clients/client1/web9/web/includes/db/Database.php: A database error has occurred. Did you forget to run maintenance/update.php after upgrading? See: https://www.mediawiki.org/wiki/Manual:Upgrading#Run_the_update_script
Query: SELECT page_namespace,page_title,page_touched,rev_len,rev_sha1 FROM `sc2_page` INNER JOIN `sc2_revision` ON ((page_latest=rev_id)) WHERE (page_namespace = '8' AND page_title IN ('Common.js','Fallback.js','Common.css','Fallback.css','Print.css') )
Function: ResourceLoaderWikiModule::getTitleInfo
Error: 1054 Unknown column 'rev_sha1' in 'field list' (localhost)

Backtrace:
#0 /var/www/clients/client1/web9/web/includes/db/Database.php(901): DatabaseBase->reportQueryError(string, integer, string, string, boolean)
#1 /var/www/clients/client1/web9/web/includes/db/Database.php(1234): DatabaseBase->query(string, string)
#2 /var/www/clients/client1/web9/web/includes/resourceloader/ResourceLoaderWikiModule.php(308): DatabaseBase->select(array, array, string, string, array, array)
#3 /var/www/clients/client1/web9/web/includes/resourceloader/ResourceLoaderWikiModule.php(260): ResourceLoaderWikiModule->getTitleInfo(ResourceLoaderContext)
#4 /var/www/clients/client1/web9/web/includes/OutputPage.php(2854): ResourceLoaderWikiModule->isKnownEmpty(ResourceLoaderContext)
#5 /var/www/clients/client1/web9/web/includes/OutputPage.php(3766): OutputPage->makeResourceLoaderLink(array, string)
#6 /var/www/clients/client1/web9/web/includes/OutputPage.php(2696): OutputPage->buildCssLinks()
#7 /var/www/clients/client1/web9/web/includes/skins/SkinTemplate.php(482): OutputPage->headElement(SkinFallback)
#8 /var/www/clients/client1/web9/web/includes/skins/SkinTemplate.php(246): SkinTemplate->prepareQuickTemplate(OutputPage)
#9 /var/www/clients/client1/web9/web/includes/OutputPage.php(2335): SkinTemplate->outputPage()
#10 /var/www/clients/client1/web9/web/includes/exception/MWException.php(206): OutputPage->output()
#11 /var/www/clients/client1/web9/web/includes/exception/MWException.php(246): MWException->reportHTML()
#12 /var/www/clients/client1/web9/web/includes/exception/MWExceptionHandler.php(69): MWException->report()
#13 /var/www/clients/client1/web9/web/includes/exception/MWExceptionHandler.php(180): MWExceptionHandler::report(DBQueryError)
#14 /var/www/clients/client1/web9/web/includes/MediaWiki.php(518): MWExceptionHandler::handleException(DBQueryError)
#15 /var/www/clients/client1/web9/web/index.php(43): MediaWiki->run()
#16 {main}