Thread:Extension talk:ConfirmAccount/error on running "update.php" via web-updater

when i try to reach my web-updater on "mywiki.com/w/mw.config/ i get this error message: "Fatal error: Class 'ConfirmAccountUISetup' not found in /home/webpages/lima-city/creativeofficewiki/html/extensions/ConfirmAccount/ConfirmAccount.php on line 42" - I need to update in order to make the extension ConfirmAccount runable.

thx for help