Unexpected non-MediaWiki exception encountered, of type "RuntimeException"
[0a076294] /index.php?hidetrans=1&printable=yes&title=Special%3AWhatLinksHere%2FUser%3A18.117.142.24 Exception from line 162 of /home/btwiki/public_html/btwiki/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 /home/btwiki/public_html/btwiki/includes/db/DatabaseMysqlBase.php(96): DatabaseBase->reportConnectionError(':real_connect()...')
#1 /home/btwiki/public_html/btwiki/includes/db/DatabaseMysqlBase.php(497): DatabaseMysqlBase->open('localhost', 'btwiki', 'C9Rhqf3ALPvXpSa...', 'btwiki')
#2 /home/btwiki/public_html/btwiki/includes/db/Database.php(1022): DatabaseMysqlBase->ping()
#3 /home/btwiki/public_html/btwiki/includes/db/Database.php(1496): DatabaseBase->query('SELECT DISTINC...', 'SMWSQLStore3Rea...')
#4 /home/btwiki/public_html/btwiki/extensions/SemanticMediaWiki/includes/src/MediaWiki/Database.php(160): DatabaseBase->select('`smw_object_ids...', 'DISTINCT smw_ti...', 't1.o_id='0'', 'SMWSQLStore3Rea...', Array)
#5 /home/btwiki/public_html/btwiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Readers.php(633): SMW\MediaWiki\Database->select('`smw_object_ids...', 'DISTINCT smw_ti...', 't1.o_id='0'', 'SMWSQLStore3Rea...', Array)
#6 /home/btwiki/public_html/btwiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3.php(304): SMWSQLStore3Readers->getInProperties(Object(SMW\DIWikiPage), NULL)
#7 /home/btwiki/public_html/btwiki/extensions/SemanticForms/includes/SF_FormLinker.php(31): SMWSQLStore3->getInProperties(Object(SMW\DIWikiPage))
#8 /home/btwiki/public_html/btwiki/extensions/SemanticForms/includes/SF_FormLinker.php(287): SFFormLinker::getIncomingProperties(Object(Title))
#9 [internal function]: SFFormLinker::setBrokenLink(Object(DummyLinker), Object(Title), Array, 'User:18.117.142...', Array, NULL)
#10 /home/btwiki/public_html/btwiki/includes/Hooks.php(199): call_user_func_array('SFFormLinker::s...', Array)
#11 /home/btwiki/public_html/btwiki/includes/GlobalFunctions.php(3877): Hooks::run('LinkEnd', Array)
#12 /home/btwiki/public_html/btwiki/includes/Linker.php(253): wfRunHooks('LinkEnd', Array)
#13 /home/btwiki/public_html/btwiki/includes/parser/LinkHolderArray.php(404): Linker::link(Object(Title), 'User:18.117.142...', Array, Array, Array)
#14 /home/btwiki/public_html/btwiki/includes/parser/LinkHolderArray.php(262): LinkHolderArray->replaceInternal('<p>No pages lin...')
#15 /home/btwiki/public_html/btwiki/includes/parser/Parser.php(5054): LinkHolderArray->replace('<p>No pages lin...')
#16 /home/btwiki/public_html/btwiki/includes/parser/Parser.php(413): Parser->replaceLinkHolders('<p>No pages lin...')
#17 /home/btwiki/public_html/btwiki/includes/cache/MessageCache.php(1042): Parser->parse('No pages link t...', Object(Title), Object(ParserOptions), true)
#18 /home/btwiki/public_html/btwiki/includes/Message.php(843): MessageCache->parse('No pages link t...', Object(Title), true, true, Object(Language))
#19 /home/btwiki/public_html/btwiki/includes/Message.php(590): Message->parseText('No pages link t...')
#20 /home/btwiki/public_html/btwiki/includes/Message.php(669): Message->toString()
#21 /home/btwiki/public_html/btwiki/includes/OutputPage.php(3605): Message->parseAsBlock()
#22 /home/btwiki/public_html/btwiki/includes/OutputPage.php(3593): OutputPage->addWikiMsgArray('nolinkshere', Array)
#23 /home/btwiki/public_html/btwiki/includes/specials/SpecialWhatlinkshere.php(203): OutputPage->addWikiMsg('nolinkshere', 'User:18.117.142...')
#24 /home/btwiki/public_html/btwiki/includes/specials/SpecialWhatlinkshere.php(93): SpecialWhatLinksHere->showIndirectLinks(0, Object(Title), 50, 0, 0)
#25 /home/btwiki/public_html/btwiki/includes/SpecialPage.php(631): SpecialWhatLinksHere->execute('User:18.117.142...')
#26 /home/btwiki/public_html/btwiki/includes/SpecialPageFactory.php(488): SpecialPage->run('User:18.117.142...')
#27 /home/btwiki/public_html/btwiki/includes/Wiki.php(298): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
#28 /home/btwiki/public_html/btwiki/includes/Wiki.php(602): MediaWiki->performRequest()
#29 /home/btwiki/public_html/btwiki/includes/Wiki.php(467): MediaWiki->main()
#30 /home/btwiki/public_html/btwiki/index.php(49): MediaWiki->run()
#31 {main}
Backtrace:
#0 /home/btwiki/public_html/btwiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3_Readers.php(633): SMW\MediaWiki\Database->select(string, string, string, string, array)
#1 /home/btwiki/public_html/btwiki/extensions/SemanticMediaWiki/includes/storage/SQLStore/SMW_SQLStore3.php(304): SMWSQLStore3Readers->getInProperties(SMW\DIWikiPage, NULL)
#2 /home/btwiki/public_html/btwiki/extensions/SemanticForms/includes/SF_FormLinker.php(31): SMWSQLStore3->getInProperties(SMW\DIWikiPage)
#3 /home/btwiki/public_html/btwiki/extensions/SemanticForms/includes/SF_FormLinker.php(287): SFFormLinker::getIncomingProperties(Title)
#4 [internal function]: SFFormLinker::setBrokenLink(DummyLinker, Title, array, string, array, NULL)
#5 /home/btwiki/public_html/btwiki/includes/Hooks.php(199): call_user_func_array(string, array)
#6 /home/btwiki/public_html/btwiki/includes/GlobalFunctions.php(3877): Hooks::run(string, array)
#7 /home/btwiki/public_html/btwiki/includes/Linker.php(253): wfRunHooks(string, array)
#8 /home/btwiki/public_html/btwiki/includes/parser/LinkHolderArray.php(404): Linker::link(Title, string, array, array, array)
#9 /home/btwiki/public_html/btwiki/includes/parser/LinkHolderArray.php(262): LinkHolderArray->replaceInternal(string)
#10 /home/btwiki/public_html/btwiki/includes/parser/Parser.php(5054): LinkHolderArray->replace(string)
#11 /home/btwiki/public_html/btwiki/includes/parser/Parser.php(413): Parser->replaceLinkHolders(string)
#12 /home/btwiki/public_html/btwiki/includes/cache/MessageCache.php(1042): Parser->parse(string, Title, ParserOptions, boolean)
#13 /home/btwiki/public_html/btwiki/includes/Message.php(843): MessageCache->parse(string, Title, boolean, boolean, Language)
#14 /home/btwiki/public_html/btwiki/includes/Message.php(590): Message->parseText(string)
#15 /home/btwiki/public_html/btwiki/includes/Message.php(669): Message->toString()
#16 /home/btwiki/public_html/btwiki/includes/OutputPage.php(3605): Message->parseAsBlock()
#17 /home/btwiki/public_html/btwiki/includes/OutputPage.php(3593): OutputPage->addWikiMsgArray(string, array)
#18 /home/btwiki/public_html/btwiki/includes/specials/SpecialWhatlinkshere.php(203): OutputPage->addWikiMsg(string, string)
#19 /home/btwiki/public_html/btwiki/includes/specials/SpecialWhatlinkshere.php(93): SpecialWhatLinksHere->showIndirectLinks(integer, Title, integer, integer, integer)
#20 /home/btwiki/public_html/btwiki/includes/SpecialPage.php(631): SpecialWhatLinksHere->execute(string)
#21 /home/btwiki/public_html/btwiki/includes/SpecialPageFactory.php(488): SpecialPage->run(string)
#22 /home/btwiki/public_html/btwiki/includes/Wiki.php(298): SpecialPageFactory::executePath(Title, RequestContext)
#23 /home/btwiki/public_html/btwiki/includes/Wiki.php(602): MediaWiki->performRequest()
#24 /home/btwiki/public_html/btwiki/includes/Wiki.php(467): MediaWiki->main()
#25 /home/btwiki/public_html/btwiki/index.php(49): MediaWiki->run()
#26 {main}