Laravel 419 Page Expired On payment response

I had developed an e-learning platform with the help of laravel 7. I had integrated CC Avenue payment gateway with the help of the Indipay Laravel package. When I click the Proceed to checkout button it correctly redirects me the CC Avenue secure payment gateway but after the transaction completed successfully the response of that transaction shows me 419 page expired error.

I hade one more doubt which URL I have to add in CSRF except part? the transaction URL or Response URL

via Chebli Mohamed