When GUEST use discount code in cart he got error 500 at bankwire/cod

[requ]

Hi.

 

I notice problem. When guest use discount(cart_voucher) code in cart he got error 500 at bankwire/cod last page (module/bankwire/validation).

 

It is known problem, or just missing some files on FTP? What core files are related to this? Maybe i should upload some files... I don't know...

 

Please help very much.

 

PS. Prestashop 1.6.1.1

 

Cheerss, req

Edited March 27, 2017 by requ (see edit history)

[vekia]

please enable error reporting and try to reproduce the issue

instead error 500 you will see detailed information about error

this is first necessary step in debug process

[requ]

Do You mean enable dev tool? I already tried to do this. At confirmation (last page of payment) i press pay and got "Error of payments, no template exist for this module" or something similar. In conclusion, can't get same error on dev mode on...

[requ]

So. I disable buy option for guest, and problem still show up sometimes... here some stuff which i got from logs:

 

Server Logs:

***.***.***.11 - - [28/Mar/2017:17:01:25 +0200] "POST /module/cashondeliveryplus/validation HTTP/1.1" 500 1089 "http://www.mypage.pl/module/cashondeliveryplus/validation" "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko"
**.***.***.98 - - [28/Mar/2017:13:55:21 +0200] "POST /module/bankwire/validation HTTP/1.1" 500 2739 "http://www.mypage.pl/module/bankwire/payment" "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko"

In Presta Admin Logs:

Frontcontroller::init - Cart cannot  be loaded or an order has already been placed using this cart
PaymentModule::validateOrder - Payment option not valid for selected delivery method 

Same problem with using COD and Bankwire (no other payment options).

 

Customers used discount voucher when error appears.

 

Please help

Edited March 28, 2017 by requ (see edit history)