prefixfree.js console errors on shopping cart

Hello, when I am on the shopping cart, I get the following console errors :
TypeError: f is null
Kώδικας: https://www.growmarket.gr/bak/templates ... fixfree.js


TypeError: e.fixers is undefined
Kώδικας: https://www.growmarket.gr/bak/templates ... fixfree.js
Γραμμή: 5

TypeError: e.fixers is undefined
Kώδικας: https://www.growmarket.gr/bak/templates ... fixfree.js
Γραμμή: 5

Σφάλμα: TypeError: e.fixers is undefined
Kώδικας: https://www.growmarket.gr/bak/templates ... fixfree.js
Γραμμή: 5

I have tried to enable/disable prefixfree option in template settings, but the error exists.
Thanks in advance,
Nikos

Hi,
1) PrefixFree is not our product , this is the real author: Lea Verou / MIT license / http://leaverou.github.io/prefixfree/
2) Short description what he does: -prefix-free lets you use only unprefixed CSS properties everywhere. It works behind the scenes, adding the current browser’s prefix to any CSS code, only when it’s needed.
3) If you feel that don't need it - remove all content from that file: gk_storefront\js\prefixfree.js

so this code will not be loaded anymore, and no there should not be any error, after refresh and cleaning cache.
Based on principle: No dog, no barking.