Upgrade problem[Critical]

[ps3z]

hello

 

i did upgrade my prestashop 1.6.0.11 to 1.6.0.13,i didnt get an error on upgrade process

 

1)when i place new order on front office ,i getting an error for all payment methods.

 

 

Fatal error: Call to undefined method BankWireMultiple::validateBankwireDiscountOrder() in /home/worldbazaarcomtr/public_html/modules/bankwiremultiple/controllers/front/validation.php on line 46

 

 

 

2)problem is orders doesnt have any description about the products.

 

http://c2n.me/3djZEuE.png

 

http://c2n.me/3djZIqJ.png