I am getting this error message when I doing a test transaction.
Fatal error: Call to undefined function curl_init() in C:\xampp\htdocs\SwanRvProducts\WA_eCart\Adv_CO_Scripts\AuthNet_PHP.php on line 42
I am using Authorize.net as my payment gateway. How can I fix this? I looked for the file that you mentioned but I could not find it.