SMS Confirmation widget: Getting error message

HI,

I am getting same error. Please check the snippet.

require_once "vendor/autoload.php";

use Twilio\Rest\Client;

    $sid = "AC*****************************"; // Your Account SID from www.twilio.com/console
    $token = "e6***************"; // Your Auth Token from www.twilio.com/console

    $client = new Client($sid , 'SECRET-KEY', $token);
    $message = $client->messages->create(
      '98**********, // Text this number
      array(
        'from' => '99*********, // From a valid Twilio number
        'body' => 'Hello from Twilio! Sandeep'
      )
    );

Could you please share us the form you are working on? I checked your email address but I cannot find an account associated with it. 

Please do make sure that you are using the correct information regarding your Twilio account in the SMS Confirmation widget. 

We'll wait for your response.