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 ('Projet_«_Appui_au_Plan_Solaire_Tunisien_»_(APST),_Séminaire_de_Clôture,_10_juin_2021','Session_d’Information_sur_les_Opportunités_de_l’Energie_Solaire_Photovoltaïque_pour_les_Municipalités_Tunisiennes','Publication_-_Tunisia:_Strengthening_Quality_Infrastructure_for_Photovoltaics','Publication_-_Tunisie:_Renforcement_de_l’infrastructure_qualité_pour_l’énergie_photovoltaïque','Atelier_sur_l\'état_des_lieux_des_installations_photovoltaïques_moyenne_tension','Journée_d’information_sur_les_expériences_de_la_Municipalité_de_Sfax_en_matière_d’Efficacité_Énergétique_et_d’Energies_Renouvelables','Contrat_de_promesse_de_bail_pour_centrale_PV_sur_un_terrain_privé','Atelier_de_présentation_des_contrats_EPC_et_O&M','Atelier_d’échange_sur_les_meilleures_pratiques_en_exploitation_et_maintenance_(O&M)_pour_les_centrales_PV_en_Tunisie','Promotion_du_Photovoltaïque_dans_le_secteur_AGR/IAA_en_Tunisie','Atelier_de_démarrage_de_l\'étude_sur_l’actualisation_du_Plan_Solaire_Tunisien_à_l’horizon_2030_et_sa_programmation','Atelier_de_présentation_des_résultats_de_l\'enquête_sur_le_marché_des_entreprises_privées_actives_dans_le_domaine_des_énergies_renouvelables_en_Tunisie','Tunisia_Renewable_Energy_Guide','Rencontre_des_Tables_Rondes_Energie_Solaire_(TRES)_de_Sfax,_Gabès_et_Jendouba','Les_opportunités_de_l’énergie_photovoltaïque_pour_les_municipalités','Enquête_:_Femmes_et_emploi_dans_les_entreprises_privées_du_secteur_de_la_maîtrise_de_l’énergie_en_Tunisie','Table_ronde_\"Energie_Solaire\"_à_Jendouba','Atelier_sur_les_opportunités_du_photovoltaïque_dans_le_secteur_agricole_et_agroalimentaire_à_Gabès','Atelier_Sur_Les_Opportunités_Du_Photovoltaïque_Dans_Le_Secteur_Hôtelier_Au_Sud-Est','Atelier_Sur_la_Promotion_De_l\'Autoproduction_Photovoltaïque_Dans_Le_Secteur_Hôtelier_A_Sfax','Promotion_de_l’entrepreneuriat_et_du_profil_technico-commercial_dans_le_secteur_photovoltaïque','Rencontre_avec_la_société_civile_-_Bizerte','Rencontre_avec_la_société_civile_-_Sfax','Ateliers_de_lancement','Evaluation_Nexus_Tunisie','Campagne_nationale_de_Mesure_des_performances_des_installations_photovoltaïques','Hohenheim_Milk_Cooling_System_-_Implementation_in_Tunisia','National_Approaches_to_Electrification_–_Review_of_Options','Séminaire_«_Le_Financement_des_Projets_Photovoltaïques_pour_l’Autoconsommation_par_le_Leasing_»','Formation_Spécifique_aux_Jeunes_Diplômés_Chômeurs','Projet_«_Appui_au_Plan_Solaire_Tunisien_»_(APST),_Séminaire_de_Clôture,_10_juin_2021','Tunisia_Renewable_Energy_Guide','Evaluation_Nexus_Tunisie','Dialogue_\"Financement_des_Projets_d’Energies_Renouvelables_sous_le_Régime_des_Autorisations\"','Renewable_Energy_Regional_Conference_-_SIED_2017','Promotion_of_Renewable_Energies_and_Energy_Efficiency_in_Tunisia','Employment,_Qualification_and_Economic_Effects_-_Energy_Situation_in_Tunisia','Wind_Energy_Country_Analyses_Tunisia','Evaluation_Nexus_Tunisie','Promotion_of_Renewable_Energies_and_Energy_Efficiency_in_Tunisia','Promotion_of_Renewable_Energies_and_Energy_Efficiency_in_Tunisia','POWERING_PV','Renewable_Energy_Potential_for_Electricity_Generation_in_Tunisia','Réalisation_des_audits_énergétiques_et_des_émissions_CO2_des_cimenteries_tunisiennes','Mise_en_Oeuvre_d’un_Projet_de_Démonstration_Pour_un_Marché_du_Carbone_Sectoriel_dans_l’Industrie_du_Ciment_en_Tunisie','Hohenheim_Milk_Cooling_System_-_Implementation_in_Tunisia','International_Conference_on_Renewable_Energy_Development_&_Applications_for_a_Sustainable_Agriculture_(RE_&_Agri)','Tunisia_Renewable_Energy_Guide','Séminaire_«_Le_Financement_des_Projets_Photovoltaïques_pour_l’Autoconsommation_par_le_Leasing_»','Dialogue_\"Financement_des_Projets_d’Energies_Renouvelables_sous_le_Régime_des_Autorisations\"','Appui_du_secteur_cimentier_tunisien_pour_l\'investissement_dans_les_énergies_renouvelables','Workshop_et_B2B_pour_les_Investissements_à_Tozeur','Workshop_and_B2B_Sessions_for_Investments_in_PV_for_Tunisian_Enterprises_in_Monastir','Financing_Models_for_PV_in_Tunisia','Groupe_de_travail_\"Approche_Commerciale\"','Workshop_and_B2B_Sessions_for_Investments_in_PV_for_Tunisian_Enterprises_in_Sfax','Workshop_and_B2B_Sessions_for_Investments_in_PV_for_Tunisian_Enterprises','International_Conference_on_Renewable_Energy_Development_&_Applications_for_a_Sustainable_Agriculture_(RE_&_Agri)','Dynamic_Cash_Flow_Analysis_of_Photovoltaic_Projects_in_Tunisia','Enabling_PV_in_the_MENA_Region','Financing_Solar_Energy_in_Tunisia','Tunisia_-_UNEP_Solar_Water_Heating_Equipment_Finance_Program','Employment,_Qualification_and_Economic_Effects_-_Energy_Situation_in_Tunisia','Promotion_of_Renewable_Energies_and_Energy_Efficiency_in_Tunisia') ) OR (page_namespace = '14' AND page_title = 'Tunisia') OR (page_namespace = '110' AND page_title = 'Countries') OR (page_namespace = '310' AND page_title = 'Countries')
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('{{CES Country|C...', Object(Title), Object(ParserOptions), true, true, 107015)
#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), 107015)
#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}