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 ('Productive_use_of_energy_-_approaches_of_GTZ_projects','Productive_Use_of_Solar_PV','Examples_Feasibility_Studies_-_Wind_Energy','Energy_for_Agriculture','Grain_mill','Solar_Drying','Decentralized_drinking_water_supply','Exploring_options_for_productive_energy_use_in_Mozambique') ) OR (page_namespace = '14' AND page_title IN ('Productive_Use','Events') ) OR (page_namespace = '100' AND page_title = 'News') OR (page_namespace = '106' AND page_title = 'Events') OR (page_namespace = '310' AND page_title = 'Productive_Use')
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('<div class="tab...')
#4 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(4772): LinkHolderArray->replace('<div class="tab...')
#5 /var/www/ISWiki/prod/current/lib/includes/parser/Parser.php(362): Parser->replaceLinkHolders('<div class="tab...')
#6 /var/www/ISWiki/prod/current/lib/includes/WikiPage.php(2914): Parser->parse('{{template:tabs...', Object(Title), Object(ParserOptions), true, true, 45260)
#7 /var/www/ISWiki/prod/current/lib/includes/PoolCounter.php(187): PoolWorkArticleView->doWork()
#8 /var/www/ISWiki/prod/current/lib/includes/Article.php(587): PoolCounterWork->execute()
#9 /var/www/ISWiki/prod/current/lib/includes/actions/ViewAction.php(40): Article->view()
#10 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(484): ViewAction->show()
#11 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(278): MediaWiki->performAction(Object(Article))
#12 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(593): MediaWiki->performRequest()
#13 /var/www/ISWiki/prod/current/lib/includes/Wiki.php(503): MediaWiki->main()
#14 /var/www/ISWiki/prod/current/lib/index.php(58): MediaWiki->run()
#15 {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}