phpCAS 1.3.2 using serverhttps://cas.uni-siegen.de/cas/(CAS 2.0) Fatal error: Uncaught exception 'CAS_AuthenticationException' in C:\xampp\php\pear\CASAuth\CAS-1.3.2\CAS\Client.php:2764 Stack trace: #0 C:\xampp\php\pear\CASAuth\CAS-1.3.2\CAS\Client.php(1224): CAS_Client->validate...