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From George Eastman House : Notes On Photographs

Detected bug in an extension! Hook LqtDispatch::customizeOldChangesList failed to return a value; should return true to continue hook processing or false to abort.

Backtrace:

#0 /var/www/vhosts/notesonphotographs.org/notesonphotographs.org/includes/ChangesList.php(439): wfRunHooks('OldChangesListR...', Array)
#1 /var/www/vhosts/notesonphotographs.org/notesonphotographs.org/includes/specials/SpecialRecentchanges.php(396): OldChangesList->recentChangesLine(Object(RecentChange), false, 2)
#2 /var/www/vhosts/notesonphotographs.org/notesonphotographs.org/includes/specials/SpecialRecentchanges.php(122): SpecialRecentChanges->webOutput(Object(ResultWrapper), Object(FormOptions))
#3 /var/www/vhosts/notesonphotographs.org/notesonphotographs.org/includes/SpecialPage.php(559): SpecialRecentChanges->execute(NULL)
#4 /var/www/vhosts/notesonphotographs.org/notesonphotographs.org/includes/Wiki.php(229): SpecialPage::executePath(Object(Title))
#5 /var/www/vhosts/notesonphotographs.org/notesonphotographs.org/includes/Wiki.php(59): MediaWiki->initializeSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#6 /var/www/vhosts/notesonphotographs.org/notesonphotographs.org/index.php(116): MediaWiki->initialize(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))
#7 {main}