error: Unable to establish session

array(1) {

$url = "http://127.0.0.1:3000/merchant/MY-GUID/login?password=MYPASS&api_code=MY-API-CODE";
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
$ccc = curl_exec($ch);
$json = json_decode($ccc, true);
echo "<pre>";
var_dump($json);
echo "</pre>";