Prestashop Gift Cards module issue - PS 1.6.1.17

[Sara]

Hello , 

I bought the module Prestashop Gift Cards from mypresta.eu, but when I'm inserting in the email template {pdf_link} that is the code with which you can have a link in the email for downloading the pdf file, it doesn't work. I receive the email but when I click on the link it triggers 500 error and it doesn't allow me to download the pdf. 

I'm working in Prestashop 1.6.1.17 and I installed the module for this version.

I'm asking here because I really don't know what to do and I need to fix it. 

Thank you in advance to all people that will read this message and give me some hint. 

Hope to solve it soon

Have a nice day

Sara

Edited November 24, 2017 by Sara (see edit history)