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(Cannot access the database)
Backtrace:
#0 /var/www/html/w/includes/libs/rdbms/loadbalancer/LoadBalancer.php(821): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1 /var/www/html/w/includes/libs/rdbms/loadbalancer/LoadBalancer.php(788): Wikimedia\Rdbms\LoadBalancer->getServerConnection(0, 'my_wiki', 0)
#2 /var/www/html/w/includes/libs/rdbms/database/DBConnRef.php(111): Wikimedia\Rdbms\LoadBalancer->getConnectionInternal(-1, Array, 'my_wiki', 0)
#3 /var/www/html/w/includes/libs/rdbms/database/DBConnRef.php(125): Wikimedia\Rdbms\DBConnRef->ensureConnection()
#4 /var/www/html/w/includes/libs/rdbms/database/DBConnRef.php(351): Wikimedia\Rdbms\DBConnRef->__call('select', Array)
#5 /var/www/html/w/includes/libs/rdbms/querybuilder/SelectQueryBuilder.php(762): Wikimedia\Rdbms\DBConnRef->select(Array, Array, Array, 'MediaWiki\\Revis...', Array, Array)
#6 /var/www/html/w/includes/Revision/RevisionStore.php(1449): Wikimedia\Rdbms\SelectQueryBuilder->fetchResultSet()
#7 /var/www/html/w/includes/Revision/RevisionStore.php(1397): MediaWiki\Revision\RevisionStore->loadSlotRecordsFromDb(42425693, 0, Object(MediaWiki\Title\Title))
#8 /var/www/html/w/includes/Revision/RevisionStore.php(1569): MediaWiki\Revision\RevisionStore->loadSlotRecords(42425693, 0, Object(MediaWiki\Title\Title))
#9 /var/www/html/w/includes/Revision/RevisionSlots.php(170): MediaWiki\Revision\RevisionStore->MediaWiki\Revision\{closure}()
#10 /var/www/html/w/includes/Revision/RevisionSlots.php(129): MediaWiki\Revision\RevisionSlots->getSlots()
#11 /var/www/html/w/includes/Revision/RevisionRecord.php(255): MediaWiki\Revision\RevisionSlots->hasSlot('main')
#12 /var/www/html/w/includes/parser/Parser.php(3800): MediaWiki\Revision\RevisionRecord->hasSlot('main')
#13 /var/www/html/w/includes/parser/Parser.php(3668): MediaWiki\Parser\Parser::statelessFetchTemplate(Object(MediaWiki\Title\Title), Object(MediaWiki\Parser\Parser))
#14 /var/www/html/w/extensions/Scribunto/includes/ScribuntoEngineBase.php(177): MediaWiki\Parser\Parser->fetchTemplateAndTitle(Object(MediaWiki\Title\Title))
#15 /var/www/html/w/extensions/Scribunto/includes/Hooks.php(166): MediaWiki\Extension\Scribunto\ScribuntoEngineBase->fetchModuleFromParser(Object(MediaWiki\Title\Title))
#16 /var/www/html/w/includes/parser/Parser.php(3492): MediaWiki\Extension\Scribunto\Hooks->invokeHook(Object(MediaWiki\Parser\Parser), Object(MediaWiki\Parser\PPTemplateFrame_Hash), Array)
#17 /var/www/html/w/includes/parser/Parser.php(3148): MediaWiki\Parser\Parser->callParserFunction(Object(MediaWiki\Parser\PPTemplateFrame_Hash), 'invoke', Array, false)
#18 /var/www/html/w/includes/parser/PPFrame_Hash.php(280): MediaWiki\Parser\Parser->braceSubstitution(Array, Object(MediaWiki\Parser\PPTemplateFrame_Hash))
#19 /var/www/html/w/includes/parser/Parser.php(3348): MediaWiki\Parser\PPFrame_Hash->expand(Object(MediaWiki\Parser\PPNode_Hash_Tree))
#20 /var/www/html/w/includes/parser/PPFrame_Hash.php(280): MediaWiki\Parser\Parser->braceSubstitution(Array, Object(MediaWiki\Parser\PPTemplateFrame_Hash))
#21 /var/www/html/w/includes/parser/Parser.php(3348): MediaWiki\Parser\PPFrame_Hash->expand(Object(MediaWiki\Parser\PPNode_Hash_Tree))
#22 /var/www/html/w/includes/parser/PPFrame_Hash.php(280): MediaWiki\Parser\Parser->braceSubstitution(Array, Object(MediaWiki\Parser\PPTemplateFrame_Hash))
#23 /var/www/html/w/includes/parser/Parser.php(3348): MediaWiki\Parser\PPFrame_Hash->expand(Object(MediaWiki\Parser\PPNode_Hash_Tree))
#24 /var/www/html/w/includes/parser/PPFrame_Hash.php(280): MediaWiki\Parser\Parser->braceSubstitution(Array, Object(MediaWiki\Parser\PPFrame_Hash))
#25 /var/www/html/w/includes/parser/Parser.php(2970): MediaWiki\Parser\PPFrame_Hash->expand(Object(MediaWiki\Parser\PPNode_Hash_Tree), 0)
#26 /var/www/html/w/includes/parser/Parser.php(1606): MediaWiki\Parser\Parser->replaceVariables('{{ItemWarning|}...')
#27 /var/www/html/w/includes/parser/Parser.php(705): MediaWiki\Parser\Parser->internalParse('{{ItemWarning|}...')
#28 /var/www/html/w/includes/Output/OutputPage.php(2750): MediaWiki\Parser\Parser->parse('{{ItemWarning|}...', Object(MediaWiki\Title\Title), Object(MediaWiki\Parser\ParserOptions), true, true, NULL)
#29 /var/www/html/w/includes/Output/OutputPage.php(2271): MediaWiki\Output\OutputPage->parseInternal('{{ItemWarning|}...', Object(MediaWiki\Title\Title), true, false, true, NULL, false)
#30 /var/www/html/w/includes/Output/OutputPage.php(2250): MediaWiki\Output\OutputPage->addWikiTextTitleInternal('{{ItemWarning|}...', Object(MediaWiki\Title\Title), true, false)
#31 /shared/LocalSettings.d/mardi02_hooks.php(18): MediaWiki\Output\OutputPage->addWikiTextAsContent('{{ItemWarning|}...')
#32 /var/www/html/w/includes/HookContainer/HookContainer.php(155): {closure}(Object(MediaWiki\Page\Article), NULL, true)
#33 /var/www/html/w/includes/HookContainer/HookRunner.php(878): MediaWiki\HookContainer\HookContainer->run('ArticleViewHead...', Array)
#34 /var/www/html/w/includes/page/Article.php(709): MediaWiki\HookContainer\HookRunner->onArticleViewHeader(Object(MediaWiki\Page\Article), NULL, true)
#35 /var/www/html/w/includes/page/Article.php(552): MediaWiki\Page\Article->generateContentOutput(Object(MediaWiki\User\User), Object(MediaWiki\Parser\ParserOptions), 0, Object(MediaWiki\Output\OutputPage), Array)
#36 /var/www/html/w/extensions/Wikibase/repo/includes/Actions/ViewEntityAction.php(80): MediaWiki\Page\Article->view()
#37 /var/www/html/w/extensions/Wikibase/repo/includes/Actions/ViewEntityAction.php(55): Wikibase\Repo\Actions\ViewEntityAction->showEntityPage()
#38 /var/www/html/w/includes/actions/ActionEntryPoint.php(728): Wikibase\Repo\Actions\ViewEntityAction->show()
#39 /var/www/html/w/includes/actions/ActionEntryPoint.php(505): MediaWiki\Actions\ActionEntryPoint->performAction(Object(MediaWiki\Page\Article), Object(MediaWiki\Title\Title))
#40 /var/www/html/w/includes/actions/ActionEntryPoint.php(143): MediaWiki\Actions\ActionEntryPoint->performRequest()
#41 /var/www/html/w/includes/MediaWikiEntryPoint.php(202): MediaWiki\Actions\ActionEntryPoint->execute()
#42 /var/www/html/w/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#43 {main}