Add product API integration - PHP

Hello,
I am developing API in which I am integrating Shopify API with scope write_products (add product). When I am calling initialize function it returns null creating directory session path I given as parameter in FileSessionStorage class.
Now when I am calling loadCurrentSession function it required minimum 3 parameter (header, cookie, online)
I get header (authorization token) from admin dashboard and sending online false, I want to ask what should I send in cookie parameter.

require_once('vendor/autoload.php');

use Shopify\Rest\Admin2022_07\Product;
use Shopify\Context;
use Shopify\Utils;
use Shopify\Auth\FileSessionStorage;

$apiKey = '';
$secreteKey = '';
$scope = 'write_products';
$host = 'shop-name.myshopify.com';
$session = Context::initialize(
    $apiKey,
    $secreteKey,
    $scope,
    $host,
    new FileSessionStorage(__DIR__ . '/session'),
);
$requestHeaders = [
    'authorization' => ''
];
$requestCookies = [];
$isOnline = false;
$test_session = Utils::loadCurrentSession(
    $requestHeaders,
    $requestCookies,
    $isOnline 
);

Have you find it ?