Database error

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A database query error has occurred. This may indicate a bug in the software.

[5a5713884ef94c74f5560473] /heraldrywiki/index.php?title=Special:UncategorizedFiles Wikimedia\Rdbms\DBQueryError: A database query error has occurred. Did you forget to run your application's database schema updater after upgrading or after adding a new extension?

Please see https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:Upgrading and https://www.mediawiki.org/wiki/Special:MyLanguage/Manual:How_to_debug for more information.

Error 1104: The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay (heraldry-wiki.com.mysql)
Function: SpecialUncategorizedImages::reallyDoQuery
Query: SELECT page_namespace AS `namespace`,page_title AS `title` FROM `hw_page` LEFT JOIN `hw_categorylinks` ON ((cl_from=page_id)) WHERE (cl_from IS NULL) AND page_namespace = 6 AND page_is_redirect = 0 ORDER BY title LIMIT 51

Backtrace:

from /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/libs/rdbms/database/Database.php(1606)
#0 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/libs/rdbms/database/Database.php(1590): Wikimedia\Rdbms\Database->getQueryException(string, integer, string, string)
#1 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/libs/rdbms/database/Database.php(1564): Wikimedia\Rdbms\Database->getQueryExceptionAndLog(string, integer, string, string)
#2 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/libs/rdbms/database/Database.php(1173): Wikimedia\Rdbms\Database->reportQueryError(string, integer, string, string, boolean)
#3 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/libs/rdbms/database/Database.php(1810): Wikimedia\Rdbms\Database->query(string, string, integer)
#4 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/libs/rdbms/database/DBConnRef.php(69): Wikimedia\Rdbms\Database->select(array, array, array, string, array, array)
#5 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/libs/rdbms/database/DBConnRef.php(319): Wikimedia\Rdbms\DBConnRef->__call(string, array)
#6 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/specialpage/QueryPage.php(523): Wikimedia\Rdbms\DBConnRef->select(array, array, array, string, array, array)
#7 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/specialpage/QueryPage.php(703): QueryPage->reallyDoQuery(integer, integer)
#8 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/specials/SpecialUncategorizedImages.php(61): QueryPage->execute(NULL)
#9 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/specialpage/SpecialPage.php(671): SpecialUncategorizedImages->execute(NULL)
#10 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/specialpage/SpecialPageFactory.php(1378): SpecialPage->run(NULL)
#11 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/MediaWiki.php(315): MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, RequestContext)
#12 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/MediaWiki.php(912): MediaWiki->performRequest()
#13 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/includes/MediaWiki.php(563): MediaWiki->main()
#14 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/index.php(53): MediaWiki->run()
#15 /customers/1/7/b/heraldry-wiki.com/httpd.www/heraldrywiki/index.php(46): wfIndexMain()
#16 {main}