Change Details

When I try to reach my watchlist page on fr.wiktionary (https://fr.wiktionary.org/wiki/Sp%C3%A9cial:Liste_de_suivi) I get either a blank page or a Wikimedia error page with the message: > Our servers are currently under maintenance or experiencing a technical problem. Please try again in a few minutes. At the bottom of the page I have: > If you report this error to the Wikimedia System Administrators, please include the details below. > Request from [my IP address] via cp2019 cp2019, Varnish XID 666899873 > Error: 503, Service Unavailable at Fri, 28 Apr 2017 08:05:09 GMT A few notes: * I first got this issue 2 days ago * I have reproduced this issue on two different computers (different place) * The mobile version works (fr.m.wiktionary.org) * I have no issue on other wikis * No one else in the project seems to have this issue * I currently have 4597 pages in my watch list

Watchlist can fail, with reports on fr.wiktionary (https://fr.wiktionary.org/wiki/Sp%C3%A9cial:Liste_de_suivi) or https://de.wikipedia.org/wiki/Spezial:Beobachtungsliste_bearbeiten **Stacktrace** Argument 1 passed to MediaWiki\Linker\LinkRenderer::makeKnownLink() must implement interface MediaWiki\Linker\LinkTarget, null given #0 /srv/mediawiki/php-1.29.0-wmf.21/includes/linker/LinkRenderer.php(301): MWExceptionHandler::handleError(integer, string, string, integer, array, array) #1 /srv/mediawiki/php-1.29.0-wmf.21/includes/changes/EnhancedChangesList.php(724): MediaWiki\Linker\LinkRenderer->makeKnownLink(NULL, HtmlArmor, array, array) #2 /srv/mediawiki/php-1.29.0-wmf.21/includes/changes/EnhancedChangesList.php(658): EnhancedChangesList->getDiffHistLinks(RCCacheEntry, array) #3 /srv/mediawiki/php-1.29.0-wmf.21/includes/changes/EnhancedChangesList.php(742): EnhancedChangesList->recentChangesBlockLine(RCCacheEntry) #4 /srv/mediawiki/php-1.29.0-wmf.21/includes/changes/EnhancedChangesList.php(106): EnhancedChangesList->recentChangesBlock() #5 /srv/mediawiki/php-1.29.0-wmf.21/includes/specials/SpecialWatchlist.php(468): EnhancedChangesList->recentChangesLine(RecentChange, NULL, integer) #6 /srv/mediawiki/php-1.29.0-wmf.21/includes/specialpage/ChangesListSpecialPage.php(1067): SpecialWatchlist->outputChangesList(Wikimedia\Rdbms\ResultWrapper, FormOptions) #7 /srv/mediawiki/php-1.29.0-wmf.21/includes/specialpage/ChangesListSpecialPage.php(506): ChangesListSpecialPage->webOutput(Wikimedia\Rdbms\ResultWrapper, FormOptions) #8 /srv/mediawiki/php-1.29.0-wmf.21/includes/specials/SpecialWatchlist.php(92): ChangesListSpecialPage->execute(NULL) #9 /srv/mediawiki/php-1.29.0-wmf.21/includes/specialpage/SpecialPage.php(522): SpecialWatchlist->execute(NULL)

When I try to reach my watchlist pageWatchlist can fail, with reports on fr.wiktionary (https://fr.wiktionary.org/wiki/Sp%C3%A9cial:Liste_de_suivi) I get either a blank page or a Wikimedia error page with the message: > Our servers are currently under maintenance or experiencing a technical problem.or https://de.wikipedia.org/wiki/Spezial:Beobachtungsliste_bearbeiten **Stacktrace** Argument 1 passed to MediaWiki\Linker\LinkRenderer::makeKnownLink() must implement interface MediaWiki\Linker\LinkTarget, null given #0 /srv/mediawiki/php-1.29.0-wmf.21/includes/linker/LinkRenderer.php(301): MWExceptionHandler::handleError(integer, string, string, integer, Please try again in a few minutes. At the bottom of the page I have:array, array) > If you report this error to the Wikimedia System Administrators#1 /srv/mediawiki/php-1.29.0-wmf.21/includes/changes/EnhancedChangesList.php(724): MediaWiki\Linker\LinkRenderer->makeKnownLink(NULL, HtmlArmor, array, please include the details below.array) > Request from [my IP address] via cp2019 cp2019#2 /srv/mediawiki/php-1.29.0-wmf.21/includes/changes/EnhancedChangesList.php(658): EnhancedChangesList->getDiffHistLinks(RCCacheEntry, Varnish XID 666899873array) > Error: 503, Service Unavailable at Fri, 28 Apr 2017 08:05:09 GMT A few notes:#3 /srv/mediawiki/php-1.29.0-wmf.21/includes/changes/EnhancedChangesList.php(742): EnhancedChangesList->recentChangesBlockLine(RCCacheEntry) * I first got this issue 2 days ago#4 /srv/mediawiki/php-1.29.0-wmf.21/includes/changes/EnhancedChangesList.php(106): EnhancedChangesList->recentChangesBlock() * I have reproduced this issue on two different computers (different place#5 /srv/mediawiki/php-1.29.0-wmf.21/includes/specials/SpecialWatchlist.php(468): EnhancedChangesList->recentChangesLine(RecentChange, NULL, integer) * The mobile version works (fr.m.wiktionary.org#6 /srv/mediawiki/php-1.29.0-wmf.21/includes/specialpage/ChangesListSpecialPage.php(1067): SpecialWatchlist->outputChangesList(Wikimedia\Rdbms\ResultWrapper, FormOptions) * I have no issue on other wikis#7 /srv/mediawiki/php-1.29.0-wmf.21/includes/specialpage/ChangesListSpecialPage.php(506): ChangesListSpecialPage->webOutput(Wikimedia\Rdbms\ResultWrapper, FormOptions) * No one else in the project seems to have this issue#8 /srv/mediawiki/php-1.29.0-wmf.21/includes/specials/SpecialWatchlist.php(92): ChangesListSpecialPage->execute(NULL) * I currently have 4597 pages in my w#9 /srv/mediawiki/php-1.29.0-wmf.21/includes/specialpage/SpecialPage.php(522): SpecialWatch listlist->execute(NULL)