```
2017-09-22 07:57:21 [WcTCYApAMEkAAG85x0MAAABL] mw1238 frwiki 1.30.0-wmf.19 error WARNING: [WcTCYApAMEkAAG85x0MAAABL] /wiki/Utilisateur:Langladure ErrorException from line 187 of /srv/mediawiki/php-1.30.0-wmf.19/includes/libs/objectcache/MultiWriteBagOStuff.php: PHP Warning: Attempted to serialize unserializable builtin class Closure$ChangesListSpecialPage::__construct#28;1852 {"exception_id":"WcTCYApAMEkAAG85x0MAAABL","exception_url":"/wiki/Utilisateur:Langladure","caught_by":"mwe_handler"}
[Exception ErrorException] (/srv/mediawiki/php-1.30.0-wmf.19/includes/libs/objectcache/MultiWriteBagOStuff.php:187) PHP Warning: Attempted to serialize unserializable builtin class Closure$ChangesListSpecialPage::__construct#28;1852
#0 /srv/mediawiki/php-1.30.0-wmf.19/includes/libs/objectcache/MultiWriteBagOStuff.php(187): MWExceptionHandler::handleError(integer, string, string, integer, array, array)
#1 /srv/mediawiki/php-1.30.0-wmf.19/includes/libs/objectcache/MultiWriteBagOStuff.php(134): MultiWriteBagOStuff->doWrite(double, boolean, string, string, ParserOutput, integer)
#2 /srv/mediawiki/php-1.30.0-wmf.19/includes/parser/ParserCache.php(335): MultiWriteBagOStuff->set(string, ParserOutput, integer)
#3 /srv/mediawiki/php-1.30.0-wmf.19/includes/poolcounter/PoolWorkArticleView.php(162): ParserCache->save(ParserOutput, WikiPage, ParserOptions, string, integer)
#4 /srv/mediawiki/php-1.30.0-wmf.19/includes/poolcounter/PoolCounterWork.php(123): PoolWorkArticleView->doWork()
#5 /srv/mediawiki/php-1.30.0-wmf.19/includes/page/Article.php(585): PoolCounterWork->execute()
#6 /srv/mediawiki/php-1.30.0-wmf.19/includes/actions/ViewAction.php(68): Article->view()
#7 /srv/mediawiki/php-1.30.0-wmf.19/includes/MediaWiki.php(499): ViewAction->show()
#8 /srv/mediawiki/php-1.30.0-wmf.19/includes/MediaWiki.php(293): MediaWiki->performAction(Article, Title)
#9 /srv/mediawiki/php-1.30.0-wmf.19/includes/MediaWiki.php(851): MediaWiki->performRequest()
#10 /srv/mediawiki/php-1.30.0-wmf.19/includes/MediaWiki.php(523): MediaWiki->main()
#11 /srv/mediawiki/php-1.30.0-wmf.19/index.php(43): MediaWiki->run()
#12 /srv/mediawiki/w/index.php(3): include(string)
#13 {main}
```
This is reproducible using the API on pages that transclude Special:RecentChanges: https://fr.wikipedia.org/w/api.php?action=parse&format=json&page=Utilisateur%3ACarsracBot&prop=text%7Clanglinks%7Ccategories%7Clinks%7Ctemplates%7Cimages%7Cexternallinks%7Csections%7Crevid%7Cdisplaytitle%7Ciwlinks%7Cproperties%7Cparsewarnings%7Cjsconfigvars%7Cmodules