create a Recurring Billing getSubscriptionId undefined method

[PibaSoft2023]

Hi expert,
I'm using la ravel and I'm trying y to create a Recurring Billing, After

a few hour of fighting i literally copy and paste the sample code

, just add my sandbox credentials to the sample https://github.com/AuthorizeNet/sample-code-php/blob/master/RecurringBilling/create-subscription.php 
I'm getting the error undefined method at line

$response->getSubscriptionId

can anyone tell me why and how to solved it please.
I'm using

php 8.2.14

authorizenet 2.0

laravel framework 8.83

he response form the API is Ok but I'm not able to get the SubscriptionId due to this error.

i was no able to add the code here due to the validation when posted it.