Unexpected non-MediaWiki exception encountered, of type "RuntimeException"
[4c8b33e6] /wiki/index.php/Special:SearchByProperty/Modification-20date/11-20April-202009-2021:49:07 Exception from line 162 of /var/www/wiki/extensions/SemanticMediaWiki/includes/src/MediaWiki/Database.php: DB connection error: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111) (localhost)
#0 /var/www/wiki/includes/db/DatabaseMysqlBase.php(103): DatabaseBase->reportConnectionError(':real_connect()...')
#1 /var/www/wiki/includes/db/DatabaseMysqlBase.php(574): DatabaseMysqlBase->open('localhost', 'wikiuser', 'wiki', 'wiki')
#2 /var/www/wiki/includes/db/Database.php(1103): DatabaseMysqlBase->ping()
#3 /var/www/wiki/includes/db/Database.php(1590): DatabaseBase->query('SELECT DISTINC...', 'SMW::getQueryRe...')
#4 /var/www/wiki/extensions/SemanticMediaWiki/includes/src/MediaWiki/Database.php(160): DatabaseBase->select('`smw_object_ids...', 'DISTINCT t1.smw...', '((t0.o_sortkey<...', 'SMW::getQueryRe...', Array)
#5 /var/www/wiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Queries.php(480): SMW\MediaWiki\Database->select('`smw_object_ids...', 'DISTINCT t1.smw...', '((t0.o_sortkey<...', 'SMW::getQueryRe...', Array)
#6 /var/www/wiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Queries.php(353): SMWSQLStore3QueryEngine->getInstanceQueryResult(Object(SMWQuery), 1)
#7 /var/www/wiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3.php(341): SMWSQLStore3QueryEngine->getQueryResult(Object(SMWQuery))
#8 /var/www/wiki/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(421): SMWSQLStore3->getQueryResult(Object(SMWQuery))
#9 /var/www/wiki/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(142): SMWSearchByProperty->getNearbyResults(1, false)
#10 /var/www/wiki/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(56): SMWSearchByProperty->displaySearchByProperty()
#11 /var/www/wiki/includes/specialpage/SpecialPage.php(379): SMWSearchByProperty->execute('Modification-20...')
#12 /var/www/wiki/includes/specialpage/SpecialPageFactory.php(503): SpecialPage->run('Modification-20...')
#13 /var/www/wiki/includes/Wiki.php(285): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
#14 /var/www/wiki/includes/Wiki.php(588): MediaWiki->performRequest()
#15 /var/www/wiki/includes/Wiki.php(447): MediaWiki->main()
#16 /var/www/wiki/index.php(46): MediaWiki->run()
#17 {main}
Backtrace:
#0 /var/www/wiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Queries.php(480): SMW\MediaWiki\Database->select(string, string, string, string, array)
#1 /var/www/wiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Queries.php(353): SMWSQLStore3QueryEngine->getInstanceQueryResult(SMWQuery, integer)
#2 /var/www/wiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3.php(341): SMWSQLStore3QueryEngine->getQueryResult(SMWQuery)
#3 /var/www/wiki/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(421): SMWSQLStore3->getQueryResult(SMWQuery)
#4 /var/www/wiki/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(142): SMWSearchByProperty->getNearbyResults(integer, boolean)
#5 /var/www/wiki/extensions/SemanticMediaWiki/includes/specials/SMW_SpecialSearchByProperty.php(56): SMWSearchByProperty->displaySearchByProperty()
#6 /var/www/wiki/includes/specialpage/SpecialPage.php(379): SMWSearchByProperty->execute(string)
#7 /var/www/wiki/includes/specialpage/SpecialPageFactory.php(503): SpecialPage->run(string)
#8 /var/www/wiki/includes/Wiki.php(285): SpecialPageFactory::executePath(Title, RequestContext)
#9 /var/www/wiki/includes/Wiki.php(588): MediaWiki->performRequest()
#10 /var/www/wiki/includes/Wiki.php(447): MediaWiki->main()
#11 /var/www/wiki/index.php(46): MediaWiki->run()
#12 {main}