Encountered 'Internal Server Error' after payment success in Stripe

[dingowhiz]

During API integration using Integration Builder(sample code) with Stripe, I encountered 'Internal Server Error'. This is when I have completed the payment window and navigates to the success page. Inside the success.html page, I hit "Manage your billing information and the server returned " Interna server error". The cause of the code is " checkout_session = stripe.checkout.Session.retrieve(checkout_session_id)". Please could you check why this is happening and whether there is any configuration I need to do at Stripe dashboard?