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 page_id,page_namespace,page_title,page_is_redirect,page_len,page_latest FROM `page` WHERE (page_namespace = '0' AND page_title IN ('Solar_Home_Systems_(SHS)','NAE_Case_Study:_Costa_Rica,_Distribution_Cooperatives','NAE_Case_Study:_Nepal,_Rural_Energy_Development_Programme','NAE_Case_Study:_South_Africa,_Integrated_National_Electrification','NAE_Case_Study:_Tunisia,_Low_Cost_Distribution_Technology','NAE_Case_Study:_Vietnam,_Rapid_Grid_Expansion','NAE_Case_Study:_Cambodia_“Light_Touch”_Regulation','NAE_Case_Study:_Kenya,_Off-Grid_for_Vision_2030','NAE_Case_Study:_Mali,_Rural_Electrification_Programme','NAE_Case_Study:_Peru,_Concession_Model_for_Standalone_Systems','NAE_Case_Study:_Tanzania,_Mini-Grids_Regulatory_Framework','NAE_Case_Study:_Vietnam,_Rapid_Grid_Expansion','NAE_Case_Study:_Cambodia_“Light_Touch”_Regulation','NAE_Case_Study:_Ethiopia,_Solar_Market_Development','NAE_Case_Study:_Kenya,_Off-Grid_for_Vision_2030','NAE_Case_Study:_Mali,_Rural_Electrification_Programme','NAE_Case_Study:_Peru,_Concession_Model_for_Standalone_Systems','NAE_Case_Study:_Philippines,_Islanded_Distribution_by_Cooperatives','NAE_Case_Study:_Tanzania,_Mini-Grids_Regulatory_Framework','NAE_Case_Study:_Vietnam,_Rapid_Grid_Expansion','NAE_Case_Study:_Brazil,_Luz_para_Todos_(Light_for_All)','NAE_Case_Study:_Cambodia_“Light_Touch”_Regulation','NAE_Case_Study:_Costa_Rica,_Distribution_Cooperatives','NAE_Case_Study:_Ethiopia,_Solar_Market_Development','NAE_Case_Study:_Kenya,_Off-Grid_for_Vision_2030','NAE_Case_Study:_Nepal,_Rural_Energy_Development_Programme','NAE_Case_Study:_Peru,_Concession_Model_for_Standalone_Systems','NAE_Case_Study:_Philippines,_Islanded_Distribution_by_Cooperatives','NAE_Case_Study:_Rwanda,_Sector-Wide_Approach_to_Planning','NAE_Case_Study:_South_Africa,_Integrated_National_Electrification','NAE_Case_Study:_Tanzania,_Mini-Grids_Regulatory_Framework','NAE_Case_Study:_Tunisia,_Low_Cost_Distribution_Technology','NAE_Case_Study:_Bangladesh,_IDCOL_Solar_Home_Systems','NAE_Case_Study:_Cambodia_“Light_Touch”_Regulation','NAE_Case_Study:_Ethiopia,_Solar_Market_Development','NAE_Case_Study:_Mali,_Rural_Electrification_Programme','NAE_Case_Study:_Rwanda,_Sector-Wide_Approach_to_Planning','NAE_Case_Study:_Vietnam,_Rapid_Grid_Expansion','NAE_Case_Study:_Bangladesh,_IDCOL_Solar_Home_Systems','NAE_Case_Study:_Costa_Rica,_Distribution_Cooperatives','NAE_Case_Study:_Mali,_Rural_Electrification_Programme','NAE_Case_Study:_Nepal,_Rural_Energy_Development_Programme','NAE_Case_Study:_Rwanda,_Sector-Wide_Approach_to_Planning','NAE_Case_Study:_Vietnam,_Rapid_Grid_Expansion','NAE_Case_Study:_Bangladesh,_IDCOL_Solar_Home_Systems','NAE_Case_Study:_Costa_Rica,_Distribution_Cooperatives','NAE_Case_Study:_Ethiopia,_Solar_Market_Development','NAE_Case_Study:_Kenya,_Off-Grid_for_Vision_2030','NAE_Case_Study:_Nepal,_Rural_Energy_Development_Programme','NAE_Case_Study:_Peru,_Concession_Model_for_Standalone_Systems','NAE_Case_Study:_Philippines,_Islanded_Distribution_by_Cooperatives','NAE_Case_Study:_South_Africa,_Integrated_National_Electrification','NAE_Case_Study:_Rwanda,_Sector-Wide_Approach_to_Planning','National_Approaches_to_Electrification_–_Technology','National_Approaches_to_Electrification_–_Delivery_Model','National_Approaches_to_Electrification_–_Legal_Basis','National_Approaches_to_Electrification_–_Price/Tariff_Regulation','NAE_Case_Study:_Nepal,_Rural_Energy_Development_Programme','NAE_Case_Study:_Peru,_Concession_Model_for_Standalone_Systems','NAE_Case_Study:_Tunisia,_Low_Cost_Distribution_Technology','NAE_Case_Study:_Peru,_Concession_Model_for_Standalone_Systems','NAE_Case_Study:_Rwanda,_Sector-Wide_Approach_to_Planning','NAE_Case_Study:_South_Africa,_Integrated_National_Electrification') ) OR (page_namespace = '110' AND page_title IN ('Mini-grid','Grid','Mini-grid','Financing_and_Funding','Grid','Mini-grid','Financing_and_Funding','Grid','Grid','Grid','Financing_and_Funding','Mini-grid','Mini-grid','Financing_and_Funding','Grid','Solar','Financing_and_Funding','Grid','Mini-grid','Solar','Grid','Mini-grid','Grid','Mini-grid','Financing_and_Funding','Financing_and_Funding','Grid','Mini-grid','Grid','Mini-grid','Mini-grid','Financing_and_Funding','Grid','Grid','Solar','Grid','Financing_and_Funding','Financing_and_Funding','Grid','Mini-grid','Financing_and_Funding','Financing_and_Funding','Financing_and_Funding','Mini-grid','Wind','Biofuel','Grid','Mini-grid','Grid','Mini-grid','Financing_and_Funding','Grid','Mini-grid','Financing_and_Funding') )
Function: LinkHolderArray::replaceInternal
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 page_id...', 'LinkHolderArray...', false)
#1 /var/www/ISWiki/prod/current/lib/includes/db/Database.php(1358): DatabaseBase->query('SELECT page_id...', 'LinkHolderArray...')
#2 /var/www/ISWiki/prod/current/lib/includes/parser/LinkHolderArray.php(316): DatabaseBase->select('page', Array, '(page_namespace...', 'LinkHolderArray...')
#3 /var/www/ISWiki/prod/current/lib/includes/parser/LinkHolderArray.php(238): LinkHolderArray->replaceInternal('<span style="co...')
#4 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(4772): LinkHolderArray->replace('<span style="co...')
#5 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(362): Parser->replaceLinkHolders('<span style="co...')
#6 /var/www/ISWiki/prod/current/lib/includes/WikiPage.php(2914): Parser->parse('<span style="co...', Object(Title), Object(ParserOptions), true, true, 266246)
#7 /var/www/ISWiki/prod/current/lib/includes/PoolCounter.php(187): PoolWorkArticleView->doWork()
#8 /var/www/ISWiki/prod/current/lib/includes/WikiPage.php(862): PoolCounterWork->execute()
#9 /var/www/ISWiki/prod/current/lib/includes/diff/DifferenceEngine.php(523): WikiPage->getParserOutput(Object(ParserOptions), 266246)
#10 /var/www/ISWiki/prod/current/lib/includes/diff/DifferenceEngine.php(387): DifferenceEngine->renderNewRevision()
#11 /var/www/ISWiki/prod/current/lib/includes/Article.php(682): DifferenceEngine->showDiffPage(false)
#12 /var/www/ISWiki/prod/current/lib/includes/Article.php(434): Article->showDiffPage()
#13 /var/www/ISWiki/prod/current/lib/includes/actions/ViewAction.php(40): Article->view()
#14 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(484): ViewAction->show()
#15 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(278): MediaWiki->performAction(Object(Article))
#16 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(593): MediaWiki->performRequest()
#17 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(503): MediaWiki->main()
#18 /var/www/ISWiki/prod/current/lib/index.php(58): MediaWiki->run()
#19 {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}