MediaWiki internal error.
Original exception: [90c5cf00ebc288cc59c1b51b] /wiki/File:stg940_OPERATIONBEGIN_JP.ogg Wikimedia\Rdbms\DBQueryError from line 1506 of /mnt/iop/wiki/includes/libs/rdbms/database/Database.php: A connection error occurred.
Query: SELECT iw_prefix,iw_url,iw_api,iw_wikiid,iw_local,iw_trans FROM `mw5psi_interwiki` WHERE iw_prefix = 'mw' LIMIT 1
Function: MediaWiki\Interwiki\ClassicInterwikiLookup::load
Error: 2006 MySQL server has gone away (127.0.0.1)
Backtrace:
#0 /mnt/iop/wiki/includes/libs/rdbms/database/Database.php(1476): Wikimedia\Rdbms\Database->makeQueryException(string, integer, string, string)
#1 /mnt/iop/wiki/includes/libs/rdbms/database/Database.php(1236): Wikimedia\Rdbms\Database->reportQueryError(string, integer, string, string, boolean)
#2 /mnt/iop/wiki/includes/libs/rdbms/database/Database.php(1703): Wikimedia\Rdbms\Database->query(string, string)
#3 /mnt/iop/wiki/includes/libs/rdbms/database/Database.php(1794): Wikimedia\Rdbms\Database->select(string, array, array, string, array, array)
#4 /mnt/iop/wiki/includes/interwiki/ClassicInterwikiLookup.php(292): Wikimedia\Rdbms\Database->selectRow(string, array, array, string)
#5 /mnt/iop/wiki/includes/libs/objectcache/WANObjectCache.php(1277): MediaWiki\Interwiki\ClassicInterwikiLookup->MediaWiki\Interwiki\{closure}(boolean, integer, array, NULL)
#6 /mnt/iop/wiki/includes/libs/objectcache/WANObjectCache.php(1150): WANObjectCache->doGetWithSetCallback(string, integer, Closure, array)
#7 /mnt/iop/wiki/includes/interwiki/ClassicInterwikiLookup.php(299): WANObjectCache->getWithSetCallback(string, integer, Closure)
#8 /mnt/iop/wiki/includes/interwiki/ClassicInterwikiLookup.php(155): MediaWiki\Interwiki\ClassicInterwikiLookup->load(string)
#9 /mnt/iop/wiki/includes/interwiki/ClassicInterwikiLookup.php(131): MediaWiki\Interwiki\ClassicInterwikiLookup->fetch(string)
#10 /mnt/iop/wiki/includes/title/MediaWikiTitleCodec.php(321): MediaWiki\Interwiki\ClassicInterwikiLookup->isValidInterwiki(string)
#11 /mnt/iop/wiki/includes/Title.php(3752): MediaWikiTitleCodec->splitTitleString(string, integer)
#12 /mnt/iop/wiki/includes/Title.php(342): Title->secureAndSplit()
#13 /mnt/iop/wiki/includes/Title.php(290): Title::newFromTextThrow(string, integer)
#14 /mnt/iop/wiki/includes/Linker.php(1285): Title::newFromText(string)
#15 [internal function]: Linker::{closure}(array)
#16 /mnt/iop/wiki/includes/Linker.php(1309): preg_replace_callback(string, Closure, string)
#17 /mnt/iop/wiki/includes/Linker.php(1098): Linker::formatLinksInComment(string, Title, boolean, NULL)
#18 /mnt/iop/wiki/includes/page/ImageHistoryList.php(269): Linker::formatComment(string, Title)
#19 /mnt/iop/wiki/includes/page/ImageHistoryPseudoPager.php(124): ImageHistoryList->imageHistoryLine(boolean, LocalFile)
#20 /mnt/iop/wiki/includes/page/ImagePage.php(789): ImageHistoryPseudoPager->getBody()
#21 /mnt/iop/wiki/includes/page/ImagePage.php(170): ImagePage->imageHistory()
#22 /mnt/iop/wiki/includes/actions/ViewAction.php(68): ImagePage->view()
#23 /mnt/iop/wiki/includes/MediaWiki.php(501): ViewAction->show()
#24 /mnt/iop/wiki/includes/MediaWiki.php(294): MediaWiki->performAction(ImagePage, Title)
#25 /mnt/iop/wiki/includes/MediaWiki.php(860): MediaWiki->performRequest()
#26 /mnt/iop/wiki/includes/MediaWiki.php(517): MediaWiki->main()
#27 /mnt/iop/wiki/index.php(42): MediaWiki->run()
#28 {main}
Exception caught inside exception handler: [90c5cf00ebc288cc59c1b51b] /wiki/File:stg940_OPERATIONBEGIN_JP.ogg Wikimedia\Rdbms\DBConnectionError from line 1195 of /mnt/iop/wiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php: Cannot access the database: Unknown error (127.0.0.1)
Backtrace:
#0 /mnt/iop/wiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(769): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1 /mnt/iop/wiki/includes/GlobalFunctions.php(2694): Wikimedia\Rdbms\LoadBalancer->getConnection(integer, array, boolean)
#2 /mnt/iop/wiki/includes/cache/LinkBatch.php(199): wfGetDB(integer)
#3 /mnt/iop/wiki/includes/cache/LinkBatch.php(141): LinkBatch->doQuery()
#4 /mnt/iop/wiki/includes/cache/LinkBatch.php(130): LinkBatch->executeInto(LinkCache)
#5 /mnt/iop/wiki/includes/skins/Skin.php(302): LinkBatch->execute()
#6 /mnt/iop/wiki/includes/skins/Skin.php(163): Skin->preloadExistence()
#7 /mnt/iop/wiki/skins/Vector/includes/SkinVector.php(67): Skin->initPage(OutputPage)
#8 /mnt/iop/wiki/includes/skins/SkinTemplate.php(224): SkinVector->initPage(OutputPage)
#9 /mnt/iop/wiki/includes/OutputPage.php(2706): SkinTemplate->outputPage()
#10 /mnt/iop/wiki/includes/exception/MWExceptionRenderer.php(136): OutputPage->output()
#11 /mnt/iop/wiki/includes/exception/MWExceptionRenderer.php(53): MWExceptionRenderer::reportHTML(Wikimedia\Rdbms\DBQueryError)
#12 /mnt/iop/wiki/includes/exception/MWExceptionHandler.php(98): MWExceptionRenderer::output(Wikimedia\Rdbms\DBQueryError, integer)
#13 /mnt/iop/wiki/includes/exception/MWExceptionHandler.php(172): MWExceptionHandler::report(Wikimedia\Rdbms\DBQueryError)
#14 /mnt/iop/wiki/includes/MediaWiki.php(544): MWExceptionHandler::handleException(Wikimedia\Rdbms\DBQueryError)
#15 /mnt/iop/wiki/index.php(42): MediaWiki->run()
#16 {main}