Wikimedia Bugzilla is closed!

Impossible to modify page on my personnal wiki. I have the following warning : 

Erreur interne

Invalid NULL return from broken hook efUpdateCheckUserData

Backtrace:

#0 /var/www/wiki/includes/RecentChange.php(210): wfRunHooks('RecentChange_sa...', Array)
#1 /var/www/wiki/includes/RecentChange.php(276): RecentChange->save()
#2 /var/www/wiki/includes/Article.php(1359): RecentChange->notifyEdit('20070623082631', Object(Title), false, Object(User), '/* Note */ test', '5185', '20070416132345', false, '', 1544, 1513, 5375)
#3 /var/www/wiki/includes/Article.php(1214): Article->doEdit('<div style="fon...', '/* Note */ test', 98)
#4 /var/www/wiki/includes/EditPage.php(880): Article->updateArticle('<div style="fon...', '/* Note */ test', false, true, '', '#Note')
#5 /var/www/wiki/includes/EditPage.php(427): EditPage->attemptSave()
#6 /var/www/wiki/includes/EditPage.php(279): EditPage->edit()
#7 /var/www/wiki/includes/Wiki.php(432): EditPage->submit()
#8 /var/www/wiki/includes/Wiki.php(48): MediaWiki->performAction(Object(OutputPage), Object(Article), Object(Title), Object(User), Object(WebRequest))
#9 /var/www/wiki/index.php(89): MediaWiki->initialize(Object(Title), Object(OutputPage), Object(User), Object(WebRequest))
#10 {main}