phpCAS error: phpCAS::client(): phpCAS::client() has already been called (at /var/www/vhosts/pts.gtorg.gatech.edu/httpdocs/wp-content/plugins/cas-maestro/cas-maestro.php:138) in /var/www/vhosts/pts.gtorg.gatech.edu/httpdocs/wp-content/plugins/gtcasauth/gtcas-authentication.php on line 137