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 smw_id,smw_sortkey FROM `smw_object_ids` WHERE smw_title = 'CES_Country_Name' AND smw_namespace = '102' AND smw_iw = '' AND smw_subobject = '' LIMIT 1
Function: SMWSql3SmwIds::getDatabaseIdAndSort
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 smw_id,...', 'SMWSql3SmwIds::...', false)
#1 /var/www/ISWiki/prod/current/lib/includes/db/Database.php(1358): DatabaseBase->query('SELECT smw_id,...', 'SMWSql3SmwIds::...')
#2 /var/www/ISWiki/prod/current/lib/includes/db/Database.php(1445): DatabaseBase->select('smw_object_ids', Array, Array, 'SMWSql3SmwIds::...', Array, Array)
#3 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_Sql3SmwIds.php(289): DatabaseBase->selectRow('smw_object_ids', Array, Array, 'SMWSql3SmwIds::...')
#4 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_Sql3SmwIds.php(225): SMWSql3SmwIds->getDatabaseIdAndSort('CES_Country_Nam...', 102, '', '', '', true, false)
#5 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_Sql3SmwIds.php(327): SMWSql3SmwIds->getSMWPageIDandSort('CES_Country_Nam...', 102, '', '', '', true, false)
#6 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Readers.php(166): SMWSql3SmwIds->getSMWPageID('CES_Country_Nam...', 102, '', '', true)
#7 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3.php(298): SMWSQLStore3Readers->getPropertyValues(Object(SMWDIWikiPage), Object(SMWDIProperty), NULL)
#8 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/dataitems/SMW_DI_Property.php(203): SMWSQLStore3->getPropertyValues(Object(SMWDIWikiPage), Object(SMWDIProperty))
#9 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/SMW_DataValueFactory.php(182): SMWDIProperty->findPropertyTypeID()
#10 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/SMW_ParseData.php(171): SMWDataValueFactory::newPropertyObjectValue(Object(SMWDIProperty), 'Germany', false, Object(SMWDIWikiPage))
#11 /var/www/ISWiki/prod/current/lib/extensions/SemanticMediaWiki/includes/parserhooks/SMW_Set.php(34): SMWParseData::addProperty('CES Country Nam...', 'Germany', false, Object(Parser), true)
#12 [internal function]: SMWSet::render(Object(Parser), 'CES Country Nam...', 'CES Country Cap...', 'CES Country Reg...', 'CES Country Coo...', 'CES Country Reg...', 'CES Country Reg...', 'CES Country Reg...', 'CES Country Reg...', 'CES Country Reg...', 'CES Country Reg...', 'CES Country Reg...', 'CES Country Reg...')
#13 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(3197): call_user_func_array(Array, Array)
#14 /var/www/ISWiki/prod/current/lib/includes/parser/Preprocessor_DOM.php(1043): Parser->braceSubstitution(Array, Object(PPTemplateFrame_DOM))
#15 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(3357): PPFrame_DOM->expand(Object(PPNode_DOM))
#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('{{CES Country|C...')
#19 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(345): Parser->internalParse('{{CES Country|C...')
#20 /var/www/ISWiki/prod/current/lib/includes/WikiPage.php(2914): Parser->parse('{{CES Country|C...', Object(Title), Object(ParserOptions), true, true, 264282)
#21 /var/www/ISWiki/prod/current/lib/includes/PoolCounter.php(187): PoolWorkArticleView->doWork()
#22 /var/www/ISWiki/prod/current/lib/includes/WikiPage.php(862): PoolCounterWork->execute()
#23 /var/www/ISWiki/prod/current/lib/includes/diff/DifferenceEngine.php(523): WikiPage->getParserOutput(Object(ParserOptions), 264282)
#24 /var/www/ISWiki/prod/current/lib/includes/diff/DifferenceEngine.php(387): DifferenceEngine->renderNewRevision()
#25 /var/www/ISWiki/prod/current/lib/includes/Article.php(682): DifferenceEngine->showDiffPage(false)
#26 /var/www/ISWiki/prod/current/lib/includes/Article.php(434): Article->showDiffPage()
#27 /var/www/ISWiki/prod/current/lib/includes/actions/ViewAction.php(40): Article->view()
#28 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(484): ViewAction->show()
#29 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(278): MediaWiki->performAction(Object(Article))
#30 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(593): MediaWiki->performRequest()
#31 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(503): MediaWiki->main()
#32 /var/www/ISWiki/prod/current/lib/index.php(58): MediaWiki->run()
#33 {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}