Unexpected non-MediaWiki exception encountered, of type "RuntimeException"
[60961035] /wiki/Special:SearchByProperty/Modification-20date/16-20January-202018-2019:03:16 RuntimeException from line 162 of /var/www/html/extensions/SemanticMediaWiki/includes/src/MediaWiki/Database.php: 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 DISTINCT t1.smw_id AS id,t1.smw_title AS t,t1.smw_namespace AS ns,t1.smw_iw AS iw,t1.smw_subobject AS so,t1.smw_sortkey AS sortkey FROM `smw_object_ids` AS t1 INNER JOIN `smw_fpt_mdat` AS t0 ON t1.smw_id=t0.s_id WHERE ((t0.o_sortkey<'2458135.2939352')) ORDER BY t0.o_sortkey DESC LIMIT 21
Function: SMW::getQueryResult
Error: 1030 Got error 28 from storage engine (localhost)

#0 /var/www/html/includes/db/Database.php(1208): DatabaseBase->reportQueryError('Got error 28 fr...', 1030, 'SELECT DISTINC...', 'SMW::getQueryRe...', false)
#1 /var/www/html/includes/db/Database.php(1693): DatabaseBase->query('SELECT DISTINC...', 'SMW::getQueryRe...')
#2 /var/www/html/extensions/SemanticMediaWiki/includes/src/MediaWiki/Database.php(160): DatabaseBase->select('`smw_object_ids...', 'DISTINCT t1.smw...', '((t0.o_sortkey<...', 'SMW::getQueryRe...', Array)
#3 /var/www/html/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Queries.php(481): SMW\MediaWiki\Database->select('`smw_object_ids...', 'DISTINCT t1.smw...', '((t0.o_sortkey<...', 'SMW::getQueryRe...', Array)
#4 /var/www/html/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Queries.php(354): SMWSQLStore3QueryEngine->getInstanceQueryResult(Object(SMWQuery), 1)
#5 /var/www/html/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3.php(344): SMWSQLStore3QueryEngine->getQueryResult(Object(SMWQuery))
#6 /var/www/html/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(421): SMWSQLStore3->getQueryResult(Object(SMWQuery))
#7 /var/www/html/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(142): SMWSearchByProperty->getNearbyResults(1, false)
#8 /var/www/html/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(56): SMWSearchByProperty->displaySearchByProperty()
#9 /var/www/html/includes/specialpage/SpecialPage.php(383): SMWSearchByProperty->execute('Modification-20...')
#10 /var/www/html/includes/specialpage/SpecialPageFactory.php(589): SpecialPage->run('Modification-20...')
#11 /var/www/html/includes/MediaWiki.php(275): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
#12 /var/www/html/includes/MediaWiki.php(583): MediaWiki->performRequest()
#13 /var/www/html/includes/MediaWiki.php(435): MediaWiki->main()
#14 /var/www/html/index.php(46): MediaWiki->run()
#15 {main}
Backtrace:
#0 /var/www/html/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Queries.php(481): SMW\MediaWiki\Database->select(string, string, string, string, array)
#1 /var/www/html/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Queries.php(354): SMWSQLStore3QueryEngine->getInstanceQueryResult(SMWQuery, integer)
#2 /var/www/html/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3.php(344): SMWSQLStore3QueryEngine->getQueryResult(SMWQuery)
#3 /var/www/html/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(421): SMWSQLStore3->getQueryResult(SMWQuery)
#4 /var/www/html/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(142): SMWSearchByProperty->getNearbyResults(integer, boolean)
#5 /var/www/html/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(56): SMWSearchByProperty->displaySearchByProperty()
#6 /var/www/html/includes/specialpage/SpecialPage.php(383): SMWSearchByProperty->execute(string)
#7 /var/www/html/includes/specialpage/SpecialPageFactory.php(589): SpecialPage->run(string)
#8 /var/www/html/includes/MediaWiki.php(275): SpecialPageFactory::executePath(Title, RequestContext)
#9 /var/www/html/includes/MediaWiki.php(583): MediaWiki->performRequest()
#10 /var/www/html/includes/MediaWiki.php(435): MediaWiki->main()
#11 /var/www/html/index.php(46): MediaWiki->run()
#12 {main}