I have the following problem, I have a virtual store created on the prestashop the customer is wanting to charge an interest on the parcel until then I have created the options in the module of payment and everything. The problem is the following when I pass the final value in modules / modulopagamento / controllers / front / validation.php the prestashop does not allow the completion of the purchase by delivering the following error:
We noticed a problem with your request. If you think this is a mistake, feel free to contact customer support team specialist.
I researched a lot and can find the solution how to change the total value of the order, can you help me with that?
Thank you