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 p.smw_title as prop,o_serialized AS v0 FROM `smw_di_time` INNER JOIN `smw_object_ids` AS p ON p_id=p.smw_id WHERE s_id='227153'
Function: SMW::getSemanticData
Error: 1927 Lost connection to backend server: connection closed by peer (server3: Generated event) (database_maxscale:4006)
' in /var/www/ISWiki/prod/current/lib/includes/db/Database.php:918
Stack trace:
#0 /var/www/ISWiki/prod/current/lib/includes/db/Database.php(885): DatabaseBase->reportQueryError('Lost connection...', 1927, 'SELECT p.smw_t...', 'SMW::getSemanti...', false)
#1 /var/www/ISWiki/prod/current/lib/includes/db/Database.php(1358): DatabaseBase->query('SELECT p.smw_t...', 'SMW::getSemanti...')
#2 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Readers.php(328): DatabaseBase->select('`smw_di_time` I...', 'p.smw_title as ...', 's_id='227153'', 'SMW::getSemanti...', Array)
#3 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Readers.php(135): SMWSQLStore3Readers->fetchSemanticData('227153', Object(SMWDIWikiPage), Object(SMWSQLStore3Table))
#4 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Readers.php(178): SMWSQLStore3Readers->getSemanticDataFromTable('227153', Object(SMWDIWikiPage), Object(SMWSQLStore3Table))
#5 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3.php(298): SMWSQLStore3Readers->getPropertyValues(Object(SMWDIWikiPage), Object(SMWDIProperty), NULL)
#6 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SMW_ResultArray.php(219): SMWSQLStore3->getPropertyValues(Object(SMWDIWikiPage), Object(SMWDIProperty), NULL)
#7 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SMW_ResultArray.php(110): SMWResultArray->loadContent()
#8 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SMW_ResultArray.php(139): SMWResultArray->getNextDataItem()
#9 /var/www/ISWiki/prod/current/lib/extensions/SemanticResultFormats/formats/calendar/SRF_Calendar.php(131): SMWResultArray->getNextDataValue()
#10 /var/www/ISWiki/prod/current/lib/extensions/SemanticResultFormats/formats/calendar/SRF_Calendar.php(66): SRFCalendar->getResultText(Object(SMWQueryResult), 1)
#11 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/queryprinters/SMW_ResultPrinter.php(202): SRFCalendar->buildResult(Object(SMWQueryResult))
#12 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/SMW_QueryProcessor.php(512): SMWResultPrinter->getResult(Object(SMWQueryResult), Array, 2)
#13 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/parserhooks/SMW_Ask.php(40): SMWQueryProcessor::getResultFromQuery(Object(SMWQuery), Array, 2, 1)
#14 [internal function]: SMWAsk::render(Object(Parser), '[[Belongs to::E...', '?Beginning', 'format=calendar')
#15 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(3197): call_user_func_array(Array, Array)
#16 /var/www/ISWiki/prod/current/lib/includes/parser/Preprocessor_DOM.php(1043): Parser->braceSubstitution(Array, Object(PPFrame_DOM))
#17 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(2986): PPFrame_DOM->expand(Object(PPNode_DOM), 0)
#18 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(1099): Parser->replaceVariables('This page lists...')
#19 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(345): Parser->internalParse('This page lists...')
#20 /var/www/ISWiki/prod/current/lib/includes/WikiPage.php(2914): Parser->parse('This page lists...', Object(Title), Object(ParserOptions), true, true, 29842)
#21 /var/www/ISWiki/prod/current/lib/includes/PoolCounter.php(187): PoolWorkArticleView->doWork()
#22 /var/www/ISWiki/prod/current/lib/includes/Article.php(587): PoolCounterWork->execute()
#23 /var/www/ISWiki/prod/current/lib/includes/CategoryPage.php(60): Article->view()
#24 /var/www/ISWiki/prod/current/lib/includes/actions/ViewAction.php(40): CategoryPage->view()
#25 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(484): ViewAction->show()
#26 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(278): MediaWiki->performAction(Object(HideUsersCategoryPage))
#27 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(593): MediaWiki->performRequest()
#28 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(503): MediaWiki->main()
#29 /var/www/ISWiki/prod/current/lib/index.php(58): MediaWiki->run()
#30 {main}
Exception caught inside exception handler: 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 value,exptime FROM `objectcache` WHERE keyname = 'webmol_energypedia:resourceloader:filter:minify-css:7:c88e2bcd56513749bec09a7e29cb3ffa' LIMIT 1
Function: SqlBagOStuff::get
Error: 1927 Lost connection to backend server: connection closed by peer (server3: Generated event) (database_maxscale:4006)
' in /var/www/ISWiki/prod/current/lib/includes/db/Database.php:918
Stack trace:
#0 /var/www/ISWiki/prod/current/lib/includes/db/Database.php(885): DatabaseBase->reportQueryError('Lost connection...', 1927, 'SELECT value,e...', 'SqlBagOStuff::g...', false)
#1 /var/www/ISWiki/prod/current/lib/includes/db/Database.php(1358): DatabaseBase->query('SELECT value,e...', 'SqlBagOStuff::g...')
#2 /var/www/ISWiki/prod/current/lib/includes/db/Database.php(1445): DatabaseBase->select('objectcache', Array, Array, 'SqlBagOStuff::g...', Array, Array)
#3 /var/www/ISWiki/prod/current/lib/includes/objectcache/SqlBagOStuff.php(124): DatabaseBase->selectRow('objectcache', Array, Array, 'SqlBagOStuff::g...')
#4 /var/www/ISWiki/prod/current/lib/includes/resourceloader/ResourceLoader.php(149): SqlBagOStuff->get('webmol_energype...')
#5 /var/www/ISWiki/prod/current/lib/includes/resourceloader/ResourceLoader.php(783): ResourceLoader->filter('minify-css', 'a:lang(ar), a:l...')
#6 /var/www/ISWiki/prod/current/lib/includes/OutputPage.php(2594): ResourceLoader->makeModuleResponse(Object(ResourceLoaderContext), Array)
#7 /var/www/ISWiki/prod/current/lib/includes/OutputPage.php(3310): OutputPage->makeResourceLoaderLink(Array, 'styles')
#8 /var/www/ISWiki/prod/current/lib/includes/OutputPage.php(2407): OutputPage->buildCssLinks()
#9 /var/www/ISWiki/prod/current/lib/includes/SkinTemplate.php(465): OutputPage->headElement(Object(SkinIswiki))
#10 /var/www/ISWiki/prod/current/lib/includes/OutputPage.php(1982): SkinTemplate->outputPage()
#11 /var/www/ISWiki/prod/current/lib/includes/Exception.php(182): OutputPage->output()
#12 /var/www/ISWiki/prod/current/lib/includes/Exception.php(209): MWException->reportHTML()
#13 /var/www/ISWiki/prod/current/lib/includes/Exception.php(490): MWException->report()
#14 /var/www/ISWiki/prod/current/lib/includes/Exception.php(569): MWExceptionHandler::report(Object(DBQueryError))
#15 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(506): MWExceptionHandler::handle(Object(DBQueryError))
#16 /var/www/ISWiki/prod/current/lib/index.php(58): MediaWiki->run()
#17 {main}