[![Screenshot](https://i.stack.imgur.com/L55Jk.png)](https://i.stack.imgur.com/L55Jk.png)

I am using Twilio SMS gateway. I am using india country code +91 with my indian phone number. I am getting an error as shown in the screenshot. 

Here is my code:

```
<?php
require __DIR__ . '/vendor/autoload.php';
use Twilio\Rest\Client;
$account_sid = '#######################';
$auth_token = '#######################';
$twilio_number = '+91**********';
$client = new Client($account_sid, $auth_token);
$client->messages->create(
// Where to send a text message (your cell phone?)
'+91**********',
array(
    'from' => $twilio_number,
    'body' => 'I sent this message in under 10 minutes!'
)
);

?>

```

Can anyone help, why I am receiving this error?