PHP-Curl can't running in Ubuntu 12.04LTS. Error 500

Question

I'm trying to do a curl to send a message Whatsapp using PHP in my ubuntu server, i already installed php5-curl (see image bellow) but still get Error : 500 on browser. But if i run on xampp on windows its running well. Is the any missconfiguration in my ubuntu server? thank you for kindly help.

this is php code :

<?php
$curl = curl_init();
$token = "xxxxxxxxxx";
$data = [
    'phone' => 'xxxxxxxxxxx',
    'message' => 'hellow world',
];

curl_setopt($curl, CURLOPT_HTTPHEADER,
    array(
        "Authorization: $token",
    )
);
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($curl, CURLOPT_URL, "https://domain/api/send-message");
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
$result = curl_exec($curl);
curl_close($curl);

echo "<pre>";
print_r($result);

?>

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