Cardsave Redirect 403-Forbidden: ERROR 13326: Couldn't speak to ServerResultURL

Can anyone check this issue and answer me.

I have integrated cardsave redirect module in Zen Cart 1.3.9g,

cardsave says: URl need fixing

ERROR 13326: Couldn't speak to ServerResultURL

You are receiving this email as an error occurred whilst processing a payment using
our hosted payment form solution. We were unable to successfully deliver the
transaction result to your system. This could have been caused by a network problem
(e.g. a connection timeout), or an error occurring on your ServerResultURL page.

As this error happened after the transaction was processed, we suppressed it from
the customer, and displayed the transaction result to them on our system.

ERROR 13326: Couldn't speak to ServerResultURL
[http://www.somedomain/includes/modules/payment/cardsave_redirect/serverresult.php].
Full Error Details: The remote server returned an error: (403) Forbidden.

how do i deal with this??? :frusty:

For security reasons, you cannot use URLs which point to PHP files located inside the /includes/ folder.

Rewrite your module to do its callback to a file that doesn't sit below the /includes/ folder.