Voucher causes Server Error?

[pmfjoe]

I am having a problem with "Discount on order (amount)" vouchers. Free shipping and % vouchers work fine. Basically what happens is I get an Internal Server Error when you try to add the voucher to the cart. Any ideas on how to trouble shoot this?

As an FYI since I don't know if this could be the cause I do have the Better Together module installed.

[pmfjoe]

Anyone? Is there anyway to see the error? All IE shows is Internal Server Error.

[tomerg3]

Check out my error 500 page http://www.presto-changeo.com/content/13-fixing-error-500

[pmfjoe]

So after some additional research the error being thrown is: Fatal error: Call to undefined method Cart::gettaxesaverageused() in xxxxxxxx\html\presta13xbeta\classes\Discount.php on line 262

I commented out Line 262 to 265 which contains:

                $taxDiscount = Cart::getTaxesAverageUsed(intval($cart->id));
               if (!$useTax AND isset($taxDiscount) AND $taxDiscount != 1)
                   $this->value = abs($this->value / (1 + $taxDiscount * 0.01));

and that seemed to solve the problem and the vouchers now work without error. I am not sure why this would cause an error as I have never changed any of this. I also don't know what removing the offending lines will do in the future.

This is Presta version 1.3.2.3.

[tomerg3]

Have you installed any modules or modifications that changed /classes/Cart.php?

[pmfjoe]

The only one is the Better Together Mod. I will have to take a look and see what code was changed in it, if that is what caused the error.

Do you think leaving out that line will cause any issues? I don't charge tax on this store.

[Arafat Jahan]

I have also the same problem, my problem was for classes/cart.php

I was install onepagecheckout module that change the taxes function on cart.php, now i re insert taxes function in cart.php from default cart.php and now works fine

[pmfjoe]

It turned out the better together module (at least if you just use the already modified files that come with it) causes problems in version 1.3.2 and 1.3.3. So ultimately I dumped it because it caused other issues. And there were no manual instructions available to edit the order.php and other files which were included. It really is a nice module in and of itself but because of the hooks it can cause issued with updates.