Custom Payment Module error in order-confirmation page

[Ali Samie]

I was trying to make one external payment module which redirects to payment gateway and comes back to order-confirmation at the end. I tried to copy the structure and code from prestashop official payment modules like ps_checkpayment.

Everything works except for the confirmation page. It says that products inside the order dont have is_virtual flag in the array and I already know if I turn off debug mode i will not face this. but Its an issue and I want to know how to fix.

I tried to place one order with ps_checkpayment and it was completely fine. I checked with xdebug and i could see that for the same order items there is is_virtual key in the array of order details.