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 cat_id,cat_title,cat_pages,cat_subcats,cat_files FROM `gw_category` WHERE cat_title = 'Objetos_Ășnicos_de_Prophecies' LIMIT 1
Function: Category::initialize
Error: 1286 Unknown table engine 'InnoDB' (localhost)
' in /var/html/guildwiki.es/w-1.19/includes/db/Database.php:918
Stack trace:
#0 /var/html/guildwiki.es/w-1.19/includes/db/Database.php(885): DatabaseBase->reportQueryError('Unknown table e...', 1286, 'SELECT cat_id,...', 'Category::initi...', false)
#1 /var/html/guildwiki.es/w-1.19/includes/db/Database.php(1358): DatabaseBase->query('SELECT cat_id,...', 'Category::initi...')
#2 /var/html/guildwiki.es/w-1.19/includes/db/Database.php(1444): DatabaseBase->select('category', Array, Array, 'Category::initi...', Array, Array)
#3 /var/html/guildwiki.es/w-1.19/includes/Category.php(47): DatabaseBase->selectRow('category', Array, Array, 'Category::initi...')
#4 /var/html/guildwiki.es/w-1.19/includes/Category.php(236): Category->initialize()
#5 /var/html/guildwiki.es/w-1.19/includes/Category.php(179): Category->getX('mPages')
#6 /var/html/guildwiki.es/w-1.19/extensions/CategoryTree/CategoryTreeFunctions.php(645): Category->getPageCount()
#7 /var/html/guildwiki.es/w-1.19/extensions/CategoryTree/CategoryTreeFunctions.php(564): CategoryTree->renderNodeInfo(Object(Title), Object(Category), 0, false)
#8 /var/html/guildwiki.es/w-1.19/extensions/CategoryTree/CategoryTreeFunctions.php(387): CategoryTree->renderNode(Object(Title), 0, false)
#9 /var/html/guildwiki.es/w-1.19/extensions/CategoryTree/CategoryTree.php(326): CategoryTree->getTag(Object(Parser), 'Categor??a:Obje...', NULL, Array, 0, Object(PPFrame_Hash))
#10 [internal function]: efCategoryTreeParserHook('Categor??a:Obje...', Array, Object(Parser), Object(PPFrame_Hash))
#11 /var/html/guildwiki.es/w-1.19/includes/parser/Parser.php(3736): call_user_func_array('efCategoryTreeP...', Array)
#12 /var/html/guildwiki.es/w-1.19/includes/parser/Preprocessor_Hash.php(1030): Parser->extensionSubstitution(Array, Object(PPFrame_Hash))
#13 /var/html/guildwiki.es/w-1.19/includes/parser/Parser.php(2978): PPFrame_Hash->expand(Object(PPNode_Hash_Tree), 0)
#14 /var/html/guildwiki.es/w-1.19/includes/parser/Parser.php(1094): Parser->replaceVariables('Com??nmente lla...')
#15 /var/html/guildwiki.es/w-1.19/includes/parser/Parser.php(345): Parser->internalParse('Com??nmente lla...')
#16 /var/html/guildwiki.es/w-1.19/includes/WikiPage.php(2914): Parser->parse('Com??nmente lla...', Object(Title), Object(ParserOptions), true, true, 129280)
#17 /var/html/guildwiki.es/w-1.19/includes/PoolCounter.php(187): PoolWorkArticleView->doWork()
#18 /var/html/guildwiki.es/w-1.19/includes/Article.php(587): PoolCounterWork->execute()
#19 /var/html/guildwiki.es/w-1.19/includes/actions/ViewAction.php(40): Article->view()
#20 /var/html/guildwiki.es/w-1.19/includes/Wiki.php(484): ViewAction->show()
#21 /var/html/guildwiki.es/w-1.19/includes/Wiki.php(278): MediaWiki->performAction(Object(Article))
#22 /var/html/guildwiki.es/w-1.19/includes/Wiki.php(593): MediaWiki->performRequest()
#23 /var/html/guildwiki.es/w-1.19/includes/Wiki.php(503): MediaWiki->main()
#24 /var/html/guildwiki.es/w-1.19/index.php(58): MediaWiki->run()
#25 {main}

Exception caught inside exception handler: exception 'DBUnexpectedError' with message 'Error in numRows(): Unknown table engine 'InnoDB' (localhost)' in /var/html/guildwiki.es/w-1.19/includes/db/DatabaseMysql.php:234
Stack trace:
#0 /var/html/guildwiki.es/w-1.19/includes/db/DatabaseUtility.php(102): DatabaseMysql->numRows(Object(ResultWrapper))
#1 /var/html/guildwiki.es/w-1.19/includes/db/DatabaseUtility.php(154): ResultWrapper->numRows()
#2 /var/html/guildwiki.es/w-1.19/includes/cache/LinkBatch.php(132): ResultWrapper->rewind()
#3 /var/html/guildwiki.es/w-1.19/includes/cache/LinkBatch.php(108): LinkBatch->addResultToCache(Object(LinkCache), Object(ResultWrapper))
#4 /var/html/guildwiki.es/w-1.19/includes/cache/LinkBatch.php(94): LinkBatch->executeInto(Object(LinkCache))
#5 /var/html/guildwiki.es/w-1.19/includes/Skin.php(211): LinkBatch->execute()
#6 /var/html/guildwiki.es/w-1.19/includes/Skin.php(186): Skin->preloadExistence()
#7 /var/html/guildwiki.es/w-1.19/skins/Vector.php(31): Skin->initPage(Object(OutputPage))
#8 /var/html/guildwiki.es/w-1.19/includes/SkinTemplate.php(161): SkinVector->initPage(Object(OutputPage))
#9 /var/html/guildwiki.es/w-1.19/includes/OutputPage.php(1982): SkinTemplate->outputPage()
#10 /var/html/guildwiki.es/w-1.19/includes/Exception.php(182): OutputPage->output()
#11 /var/html/guildwiki.es/w-1.19/includes/Exception.php(209): MWException->reportHTML()
#12 /var/html/guildwiki.es/w-1.19/includes/Exception.php(490): MWException->report()
#13 /var/html/guildwiki.es/w-1.19/includes/Exception.php(569): MWExceptionHandler::report(Object(DBQueryError))
#14 /var/html/guildwiki.es/w-1.19/includes/Wiki.php(506): MWExceptionHandler::handle(Object(DBQueryError))
#15 /var/html/guildwiki.es/w-1.19/index.php(58): MediaWiki->run()
#16 {main}