MediaWiki internal error.

Original exception: exception 'DBQueryError' with message '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,page_namespace,page_title,page_id,page_latest,user_name FROM `revision` INNER JOIN `page` ON ((page_id = rev_page)) LEFT JOIN `user` ON ((rev_user != 0) AND (user_id = rev_user)) WHERE page_namespace = '10' AND page_title = '!' AND rev_id = '187881' LIMIT 1
Function: Revision::fetchFromConds
Error: 1053 Server shutdown in progress (roberto)
' in /home/sophia/domains/mw120a/phase3/includes/db/Database.php:923
Stack trace:
#0 /home/sophia/domains/mw120a/phase3/includes/db/Database.php(890): DatabaseBase->reportQueryError('Server shutdown...', 1053, 'SELECT rev_id,...', 'Revision::fetch...', false)
#1 /home/sophia/domains/mw120a/phase3/includes/db/Database.php(1363): DatabaseBase->query('SELECT rev_id,...', 'Revision::fetch...')
#2 /home/sophia/domains/mw120a/phase3/includes/Revision.php(298): DatabaseBase->select(Array, Array, Array, 'Revision::fetch...', Array, Array)
#3 /home/sophia/domains/mw120a/phase3/includes/Revision.php(247): Revision::fetchFromConds(Object(DatabaseMysql), Array)
#4 /home/sophia/domains/mw120a/phase3/includes/Revision.php(230): Revision::loadFromConds(Object(DatabaseMysql), Array)
#5 /home/sophia/domains/mw120a/phase3/includes/Revision.php(75): Revision::newFromConds(Array)
#6 /home/sophia/domains/mw120a/phase3/includes/parser/Parser.php(3481): Revision::newFromTitle(Object(Title))
#7 [internal function]: Parser->statelessFetchTemplate(Object(Title), Object(Parser))
#8 /home/sophia/domains/mw120a/phase3/includes/parser/Parser.php(3427): call_user_func(Array, Object(Title), Object(Parser))
#9 /home/sophia/domains/mw120a/phase3/includes/parser/Parser.php(3402): Parser->fetchTemplateAndTitle(Object(Title))
#10 /home/sophia/domains/mw120a/phase3/includes/parser/Parser.php(3261): Parser->getTemplateDom(Object(Title))
#11 /home/sophia/domains/mw120a/phase3/includes/parser/Preprocessor_DOM.php(1043): Parser->braceSubstitution(Array, Object(PPFrame_DOM))
#12 /home/sophia/domains/mw120a/extensions/ParserFunctions/ParserFunctions_body.php(125): PPFrame_DOM->expand(Object(PPNode_DOM))
#13 [internal function]: ExtParserFunctions::ifexprObj(Object(Parser), Object(PPFrame_DOM), Array)
#14 /home/sophia/domains/mw120a/phase3/includes/parser/Parser.php(3165): call_user_func_array('ExtParserFuncti...', Array)
#15 /home/sophia/domains/mw120a/phase3/includes/parser/Preprocessor_DOM.php(1043): Parser->braceSubstitution(Array, Object(PPFrame_DOM))
#16 /home/sophia/domains/mw120a/phase3/includes/parser/Parser.php(2954): PPFrame_DOM->expand(Object(PPNode_DOM), 0)
#17 /home/sophia/domains/mw120a/phase3/includes/parser/Parser.php(1072): Parser->replaceVariables('{| style="width...')
#18 /home/sophia/domains/mw120a/phase3/includes/parser/Parser.php(345): Parser->internalParse('{| style="width...')
#19 /home/sophia/domains/mw120a/phase3/includes/WikiPage.php(2922): Parser->parse('{| style="width...', Object(Title), Object(ParserOptions), true, true, 1227898)
#20 /home/sophia/domains/mw120a/phase3/includes/PoolCounter.php(188): PoolWorkArticleView->doWork()
#21 /home/sophia/domains/mw120a/phase3/includes/Article.php(587): PoolCounterWork->execute()
#22 /home/sophia/domains/mw120a/phase3/includes/actions/ViewAction.php(40): Article->view()
#23 /home/sophia/domains/mw120a/phase3/includes/Wiki.php(483): ViewAction->show()
#24 /home/sophia/domains/mw120a/phase3/includes/Wiki.php(277): MediaWiki->performAction(Object(Article))
#25 /home/sophia/domains/mw120a/phase3/includes/Wiki.php(592): MediaWiki->performRequest()
#26 /home/sophia/domains/mw120a/phase3/includes/Wiki.php(502): MediaWiki->main()
#27 /home/sophia/domains/mw120a/phase3/index.php(58): MediaWiki->run()
#28 {main}

Exception caught inside exception handler: exception 'DBConnectionError' with message 'DB connection error: Can't connect to MySQL server on 'roberto' (111) (roberto)' in /home/sophia/domains/mw120a/phase3/includes/db/Database.php:751
Stack trace:
#0 /home/sophia/domains/mw120a/phase3/includes/db/DatabaseMysql.php(146): DatabaseBase->reportConnectionError(' Can't connect ...')
#1 /home/sophia/domains/mw120a/phase3/includes/db/DatabaseMysql.php(469): DatabaseMysql->open('roberto', 'uncyc_ja', 'hikiuser', 'uncyc_ja')
#2 /home/sophia/domains/mw120a/phase3/includes/db/Database.php(873): DatabaseMysql->ping()
#3 /home/sophia/domains/mw120a/phase3/includes/db/Database.php(1363): DatabaseBase->query('SELECT page_id...', 'LinkBatch::doQu...')
#4 /home/sophia/domains/mw120a/phase3/includes/cache/LinkBatch.php(172): DatabaseBase->select('page', Array, '(page_namespace...', 'LinkBatch::doQu...')
#5 /home/sophia/domains/mw120a/phase3/includes/cache/LinkBatch.php(106): LinkBatch->doQuery()
#6 /home/sophia/domains/mw120a/phase3/includes/cache/LinkBatch.php(94): LinkBatch->executeInto(Object(LinkCache))
#7 /home/sophia/domains/mw120a/phase3/includes/Skin.php(211): LinkBatch->execute()
#8 /home/sophia/domains/mw120a/phase3/includes/Skin.php(186): Skin->preloadExistence()
#9 /home/sophia/domains/mw120a/phase3/skins/Vector.php(31): Skin->initPage(Object(OutputPage))
#10 /home/sophia/domains/mw120a/phase3/includes/SkinTemplate.php(161): SkinVector->initPage(Object(OutputPage))
#11 /home/sophia/domains/mw120a/phase3/includes/OutputPage.php(1997): SkinTemplate->outputPage()
#12 /home/sophia/domains/mw120a/phase3/includes/Exception.php(182): OutputPage->output()
#13 /home/sophia/domains/mw120a/phase3/includes/Exception.php(209): MWException->reportHTML()
#14 /home/sophia/domains/mw120a/phase3/includes/Exception.php(490): MWException->report()
#15 /home/sophia/domains/mw120a/phase3/includes/Exception.php(569): MWExceptionHandler::report(Object(DBQueryError))
#16 /home/sophia/domains/mw120a/phase3/includes/Wiki.php(505): MWExceptionHandler::handle(Object(DBQueryError))
#17 /home/sophia/domains/mw120a/phase3/index.php(58): MediaWiki->run()
#18 {main}