100. Mostrar mensaje de gracias

Intente una y otra vez y no lo logre, no me mostro nada en $response:
[2025-10-23 17:08:50] local.INFO: array (

  'Niubiz Response: ' => NULL,

)  

<?php

namespace App\Http\Controllers;

use App\Models\Address;

use App\Models\Order;

use Gloudemans\Shoppingcart\Facades\Cart;

use Illuminate\Http\Request;

use Illuminate\Support\Facades\Http;

class CheckoutController extends Controller

{

    public function index()

    {

        $access_token = $this->generateAccessToken();

        $session_token = $this->generateSessionToken($access_token);

        // dd(["JD ACCESS_TOKEN:" => $access_token,"SESSION TOKEN:"=>$session_token]);

        return view('checkout.index', compact('session_token'));

    }

    public function generateAccessToken()

    {

        $url_api = config('services.niubiz.url_api') . '/api.security/v1/security';

        $user = config('services.niubiz.user');

        $password = config('services.niubiz.password');

        $auth = base64_encode($user . ':' . $password);

        return Http::withHeaders(['Authorization' => 'Basic ' . $auth])->get($url_api)->body();

    }

    public function generateSessionToken($access_token)

    {

        $merchant_id = config('services.niubiz.merchant_id');

        $url_api = config('services.niubiz.url_api') . "/api.ecommerce/v2/ecommerce/token/session/{$merchant_id}";

        $response = Http::withHeaders([

            'Authorization' => $access_token,

            'Content-Type' => 'application/json'

        ])->post($url_api, [

            'channel' => 'web',

            'amount' => (float) number_format((float) str_replace(',', '', Cart::instance('shopping')->subtotal()), 2, '.', ''), // cambio de , a . y ya no genera error

            'antifraud' => [

                'clientIp' => request()->ip(),

                'merchantDefineData' => [

                    'MDD4' => 'integraciones@niubiz.com.pe',

                    'MDD32' => 'JD1892639123',

                    'MDD75' => 'Registrado',

                    'MDD77' => 458

                ]

            ],

        ])->json();

        // dd($response);

        return $response['sessionKey'];

        //---------------------------------

    }

    public function paid(Request $request)

    {

        $access_token = $this->generateAccessToken();

        $merchant_id = config('services.niubiz.merchant_id');

        $url_api = config('services.niubiz.url_api') . "/api.authorization/v3/authorization/ecommerce/{$merchant_id}";

        $response = Http::withHeaders(['Authorization' => $access_token, 'Content-Type' => 'application/json'])

            ->post($url_api, [

                "channel" => "web",

                "capture_type" => "manual",

                "contable" => true,

                "order" => [

                    "tokenId" => $request->transactionToken,

                    "purchaseNumber" => $request->purchasenumber,

                    "amount" => $request->amount,

                    "currency" => "PEN",

                ]

            ])->json();

            \Log::info(['Niubiz Response: '=> $response]);

        return $response;

        // return $request->all();

        // session()->flash('niubiz', ['response' => $response,"purchaseNumber" => $request->purchasenumber]);

        if (isset($response['dataMap']) && $response['dataMap']['ACTION_CODE'] == '000') {

            $address=Address::where('user_id',auth()->id())

                    ->where('default',true)->first();

            Order::create([

                'user_id'=>auth()->id(),

                'content'=>Cart::instance('shopping')->content(),

                'address'=> $address,

                'payment_id'=> $response['dataMap']['TRANSACTION_ID'],

                'total'=> Cart::subtotal(),

            ]);

             Cart::destroy();

            return redirect()->route('gracias');

        }

        return redirect()->route('checkout.index');

    }

}