error

[Aravind737]

Undefined property: stdClass::$response_code (500 Internal Server Error) error showing in paytabscontroller.php..please assist the same...code below

public function index(Request $request)
{

    $validator = Validator::make($request->all(), [ //Validator
      
        'supplier_id'		=> 	'nullable',
    ]);


    $pt = Paytabs::getInstance(); //the instance through the register service provider singleton

    //$result = Paytabs::getInstance()->create_pay_page(array(
    $result =$pt->create_pay_page(array(
        //Customer's Personal Information
        'cc_first_name' => "john",          //This will be prefilled as Credit Card First Name
        'cc_last_name' => "Doe",            //This will be prefilled as Credit Card Last Name
        'cc_phone_number' => "00973",
        'phone_number' => "33333333",
        'email' => "customer@gmail.com",
        'supplier_id' => $request['supplier_id'],
        

        //Customer's Billing Address (All fields are mandatory)
        //When the country is selected as USA or CANADA, the state field should contain a String of 2 characters containing the ISO state code otherwise the payments may be rejected.
        //For other countries, the state can be a string of up to 32 characters.
        'billing_address' => "manama bahrain",
        'city' => "manama",
        'state' => "manama",
        'postal_code' => "00973",
        'country' => "BHR",

        //Customer's Shipping Address (All fields are mandatory)
        'address_shipping' => "Juffair bahrain",
        'city_shipping' => "manama",
        'state_shipping' => "manama",
        'postal_code_shipping' => "00973",
        'country_shipping' => "BHR",

        //Product Information
        "products_per_title" => "Product1 || Product 2 || Product 4",   //Product title of the product. If multiple products then add “||” separator
        'quantity' => "1 || 1 || 1",                                    //Quantity of products. If multiple products then add “||” separator
        'unit_price' => "2 || 2 || 6",                                  //Unit price of the product. If multiple products then add “||” separator.
        "other_charges" => "99.00",                                     //Additional charges. e.g.: shipping charges, taxes, VAT, etc.
        'amount' => "101.00",                                          //Amount of the products and other charges, it should be equal to: amount = (sum of all products’ (unit_price * quantity)) + other_charges
        'discount' => "1",                                                //Discount of the transaction. The Total amount of the invoice will be= amount - discount

        //Invoice Information
        'title' => "John Doe",               // Customer's Name on the invoice
        "reference_no" => "1231231",        //Invoice reference number in your system

    )); 
if ($result->response_code == 4012) {
        return redirect($result->payment_url);
    }
    if ($result->response_code == 4094) {
        return $result->details;
    }

    return $result->result;
}