all others API functions is working, but the servicestatus not...

I have my own classes to manage cpanel API, but for help and test pouposes I added this function to the API discusses in this forum for test:
Code:
file (xmlapi.php.inc)
public function servicestatus() {
return $this->xmlapi_query("servicestatus");
}
test.php file:
$ip = "127.0.0.1";
$root_pass = "*************";
$xmlapi = new xmlapi($ip);
$xmlapi->password_auth("root",$root_pass);
$xmlapi->set_debug(1);
$k=$xmlapi->servicestatus();
print_r($k);
results:
Code:
QUERY: https://127.0.0.1:2087/xml-api/servicestatus? RAW XML:
Warning: simplexml_load_string() [function.simplexml-load-string]: Entity: line 3: parser error : Start tag expected, '<' not found in /backup/mmega/public_html/cp/xmlapi.php.inc on line 103
Warning: simplexml_load_string() [function.simplexml-load-string]: in /backup/mmega/public_html/cp/xmlapi.php.inc on line 103
Warning: simplexml_load_string() [function.simplexml-load-string]: ^ in /backup/mmega/public_html/cp/xmlapi.php.inc on line 103
bool(false) SIMPLEXML OBJ:
Warning: simplexml_load_string() [function.simplexml-load-string]: Entity: line 3: parser error : Start tag expected, '<' not found in /backup/mmega/public_html/cp/xmlapi.php.inc on line 105
Warning: simplexml_load_string() [function.simplexml-load-string]: in /backup/mmega/public_html/cp/xmlapi.php.inc on line 105
Warning: simplexml_load_string() [function.simplexml-load-string]: ^ in /backup/mmega/public_html/cp/xmlapi.php.inc on line 105
cPanel 11.24.5-R37629 - WHM 11.24.2 - X 3.9
CENTOS 5.3 x86_64 standard
regards