MediaWiki internal error.

Original exception: [b74e5171f1470aaf3092b764] /index.php?title=Help:DateTime_Only_if_On_or_After&diff=prev&oldid=460 Wikimedia\Rdbms\DBQueryError from line 1075 of /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php: A database query error has occurred. Did you forget to run your application's database schema updater after upgrading?
Query: BEGIN
Function: Wikimedia\Rdbms\Database::query (MessageCache::loadFromDB(en)-big)
Error: 1 cannot start a transaction within a transaction

Backtrace:
#0 /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php(933): Wikimedia\Rdbms\Database->reportQueryError(string, integer, string, string, boolean)
#1 /home/sfdocs/mediawiki/includes/libs/rdbms/database/DatabaseSqlite.php(751): Wikimedia\Rdbms\Database->query(string, string)
#2 /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php(2729): Wikimedia\Rdbms\DatabaseSqlite->doBegin(string)
#3 /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php(872): Wikimedia\Rdbms\Database->begin(string, string)
#4 /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php(1269): Wikimedia\Rdbms\Database->query(string, string)
#5 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(502): Wikimedia\Rdbms\Database->select(string, array, array, string)
#6 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(420): MessageCache->loadFromDB(string, NULL)
#7 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(344): MessageCache->loadFromDBWithLock(string, array, NULL)
#8 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(976): MessageCache->load(string)
#9 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(905): MessageCache->getMsgFromNamespace(string, string)
#10 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(873): MessageCache->getMessageForLang(Language, string, boolean, array)
#11 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(813): MessageCache->getMessageFromFallbackChain(Language, string, boolean)
#12 /home/sfdocs/mediawiki/includes/Message.php(1257): MessageCache->get(string, boolean, Language)
#13 /home/sfdocs/mediawiki/includes/Message.php(842): Message->fetchMessage()
#14 /home/sfdocs/mediawiki/includes/Message.php(934): Message->toString(string)
#15 /home/sfdocs/mediawiki/includes/OutputPage.php(972): Message->text()
#16 /home/sfdocs/mediawiki/includes/diff/DifferenceEngine.php(298): OutputPage->setPageTitle(Message)
#17 /home/sfdocs/mediawiki/includes/page/Article.php(709): DifferenceEngine->showDiffPage(boolean)
#18 /home/sfdocs/mediawiki/includes/page/Article.php(458): Article->showDiffPage()
#19 /home/sfdocs/mediawiki/includes/actions/ViewAction.php(68): Article->view()
#20 /home/sfdocs/mediawiki/includes/MediaWiki.php(499): ViewAction->show()
#21 /home/sfdocs/mediawiki/includes/MediaWiki.php(293): MediaWiki->performAction(Article, Title)
#22 /home/sfdocs/mediawiki/includes/MediaWiki.php(862): MediaWiki->performRequest()
#23 /home/sfdocs/mediawiki/includes/MediaWiki.php(523): MediaWiki->main()
#24 /home/sfdocs/mediawiki/index.php(43): MediaWiki->run()
#25 {main}

Exception caught inside exception handler: [b74e5171f1470aaf3092b764] /index.php?title=Help:DateTime_Only_if_On_or_After&diff=prev&oldid=460 Wikimedia\Rdbms\DBQueryError from line 1075 of /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php: A database query error has occurred. Did you forget to run your application's database schema updater after upgrading?
Query: BEGIN
Function: Wikimedia\Rdbms\Database::query (MessageCache::loadFromDB(en)-big)
Error: 1 cannot start a transaction within a transaction

Backtrace:
#0 /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php(933): Wikimedia\Rdbms\Database->reportQueryError(string, integer, string, string, boolean)
#1 /home/sfdocs/mediawiki/includes/libs/rdbms/database/DatabaseSqlite.php(751): Wikimedia\Rdbms\Database->query(string, string)
#2 /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php(2729): Wikimedia\Rdbms\DatabaseSqlite->doBegin(string)
#3 /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php(872): Wikimedia\Rdbms\Database->begin(string, string)
#4 /home/sfdocs/mediawiki/includes/libs/rdbms/database/Database.php(1269): Wikimedia\Rdbms\Database->query(string, string)
#5 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(502): Wikimedia\Rdbms\Database->select(string, array, array, string)
#6 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(420): MessageCache->loadFromDB(string, NULL)
#7 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(344): MessageCache->loadFromDBWithLock(string, array, NULL)
#8 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(976): MessageCache->load(string)
#9 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(905): MessageCache->getMsgFromNamespace(string, string)
#10 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(873): MessageCache->getMessageForLang(Language, string, boolean, array)
#11 /home/sfdocs/mediawiki/includes/cache/MessageCache.php(813): MessageCache->getMessageFromFallbackChain(Language, string, boolean)
#12 /home/sfdocs/mediawiki/includes/Message.php(1257): MessageCache->get(string, boolean, Language)
#13 /home/sfdocs/mediawiki/includes/Message.php(842): Message->fetchMessage()
#14 /home/sfdocs/mediawiki/includes/Message.php(934): Message->toString(string)
#15 /home/sfdocs/mediawiki/includes/OutputPage.php(936): Message->text()
#16 /home/sfdocs/mediawiki/includes/OutputPage.php(983): OutputPage->setHTMLTitle(Message)
#17 /home/sfdocs/mediawiki/includes/OutputPage.php(2477): OutputPage->setPageTitle(string)
#18 /home/sfdocs/mediawiki/includes/exception/MWExceptionRenderer.php(170): OutputPage->prepareErrorPage(string)
#19 /home/sfdocs/mediawiki/includes/exception/MWExceptionRenderer.php(55): MWExceptionRenderer::reportHTML(Wikimedia\Rdbms\DBQueryError)
#20 /home/sfdocs/mediawiki/includes/exception/MWExceptionHandler.php(75): MWExceptionRenderer::output(Wikimedia\Rdbms\DBQueryError, integer)
#21 /home/sfdocs/mediawiki/includes/exception/MWExceptionHandler.php(130): MWExceptionHandler::report(Wikimedia\Rdbms\DBQueryError)
#22 /home/sfdocs/mediawiki/includes/MediaWiki.php(551): MWExceptionHandler::handleException(Wikimedia\Rdbms\DBQueryError)
#23 /home/sfdocs/mediawiki/index.php(43): MediaWiki->run()
#24 {main}