CAS Authentication 2.4 in MULTISITE no work!

CAS Authentication 2.4 in MULTISITE no work!

I use MULTISITE setting in wp-config.php

define(‘WP_DEBUG’, true);
define(‘WP_ALLOW_MULTISITE’, true);
define( ‘MULTISITE’, true );
define( ‘SUBDOMAIN_INSTALL’, false );
$base = ‘/’;
define( ‘DOMAIN_CURRENT_SITE’, ‘localhost’ );
define( ‘PATH_CURRENT_SITE’, ‘/’ );
define( ‘SITE_ID_CURRENT_SITE’, 1 );
define( ‘BLOG_ID_CURRENT_SITE’, 1 );

click the site url: https://localhost/wp-login.php is work. this url redirect to https://localhost:8080/cas/login

but click the site url: https://localhost/site1/wp-login.php https://localhost/site2/wp-login.php https://localhost/site3/wp-login.php can’t redirect to https://localhost:8080/cas/login

is show “cas-authentication plugin not configured” why not work?