api callback unable to log response

I implemented an external API that allows payment to my application.

In my controller:

 public function createBill(){
        //$user = User::find(auth()->id());
        $option = array(
            'userSecretKey'=>config('toyyibpay.key'),
            'categoryCode'=>config('toyyibpay.category'),
            'billName'=>'FUIYOH HUB',
            'billDescription'=>'Top Up Credit',
            'billPriceSetting'=>0,
            'billPayorInfo'=>0,
            'billAmount'=>0,
            'billReturnUrl'=>route('toyyibpay-status'),
            'billCallbackUrl'=>route('toyyibpay-callback'),
            'billExternalReferenceNo' => '',
            'billTo'=>'',
            'billEmail'=>'',
            'billPhone'=>'',
            'billSplitPayment'=>0,
            'billSplitPaymentArgs'=>'',
            'billPaymentChannel'=>0,
            'billContentEmail'=>'Thank you for using our platform!',
            'billChargeToCustomer'=>2
          );  

    
          $url = 'https://dev.toyyibpay.com/index.php/api/createBill';
          
          $response = Http::asForm()->post($url,$option);
          
          //this line below throwing the error
          $billCode = $response[0]['BillCode'];
          //dd($billCode);
         
          

          return redirect('https://dev.toyyibpay.com/'.$billCode);
    }

    public function paymentStatus(){

        //if success save payment record to db

          $response = request()->all();

          Log::info($response);

          return $response;
    }

    public function callback(){
        $response = request()->all();
        Log::info($response);
    }

Route:

Route::get('/toyyibpay','ToyyibpayController@createBill')->name('toyyibpay-create');

Route::get('/toyyibpay-status','ToyyibpayController@paymentStatus')->name('toyyibpay-status');

Route::post('/toyyibpay-callback','ToyyibpayController@callback')->name('toyyibpay-callback');

I omitted the CSRF for the post request in VerifyCsrfToken.php:

protected $except = [
        'toyyibpay-callback'
    ];

I want to log the response from the callback to make sure it is working. After a successful transaction, my log file shows:

[2021-07-13 08:57:55] local.INFO: array (
  'status_id' => '1',
  'billcode' => 'h5bz62x1',
  'order_id' => NULL,
  'msg' => 'ok',
  'transaction_id' => 'TP70269027515316130721',
)  

1 meaning transaction is successful but it only logs the response from paymentStatus() and not in the callback function. Why is it not working?