Wikimedia Bugzilla is closed!

This happen with MediaWiki 1.15.0 and the 1.15.x snapshot of ConfirmAccount extension.

Warning:  Invalid argument supplied for foreach() in /extensions/ConfirmAccount/ConfirmAccount_body.php on line 796

foreach( $errors as $error ) {
   $wgOut->addHTML( '<p>' . $error . '</p>' );
}

$errors should be checked for non-null before using it in a foreach statement.