How to handle redirect back to Laravel website from payment portal

I am using Laravel 5.2 and I am currently testing using VS Code on my local machine(http). I am testing integrating a payment portal into my application. I am able to process the transaction on the payment portal(https). When the transaction is completed a redirect to my application's "thank you" page is triggered, but this is not successful. Instead it is redirecting to the login page?

I have tried excluding the CSRF protection for this specific uri's.

protected $except = [
 'webhook/*'
];

I would expect to be directed to the "thank you" page once the transaction has been processed on the payment portal. Instead being directed to the login page.

via Chebli Mohamed