I have an old store EE 2.5.3, CT 2.2.9 - implementation from 2012. A week ago, I get this message overnight when returning from the payment gateway to the cartthrob store.  Forbidden /themes/third_party/cartthrob/lib/extload.php/przelewy24/success. Has anyone encountered this? Maybe the server settings have been changed? The extload.php file has 755 permissions. I would appreciate any help.