API is not working

PHP Code

 $key =  'xxxxxxxxxxxxxxxxxxxxxxxxxxxx';

$pass = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';

$ip = 'censored IP';



require($_SERVER['DOCUMENT_ROOT'].'/content/addons/Virtualizor/API/admin.php');



                $admin = new Virtualizor_Admin_API($ip, $key, $pass);



                $page = 0;

                $reslen = 0;

                //For Searching

                $post = array();

                $post['vpsid'] = '';

                $post['vpsname'] = '';

                $post['vpsip'] = '';

                $post['vpshostname'] = '';

                $post['vsstatus'] = '';

                $post['vstype'] = '';

                $post['speedcap'] = '';

                $post['user'] = '';

                $post['vsgid'] = '';

                $post['vserid'] = '';

                $post['plid'] = '';

                $post['bpid'] = '';

                $post['serid'] = '';

                $post['search'] = '';



                $output = $admin->listvs($page ,$reslen ,$post);



                print_r(json_encode($output)); // RETURNS "false"
Softaculous
