Pruduct pages stopped working

Hi: I am new with zen cart and I was impressed with features. I've just started my first site https://www.kobazz.com/shop/ as help to my friend.

I wanted to improve look of basic template and I've created new icons and uploaded them to proper folder (same file name, but size was different - proportion).:oops: and after that , my problem started.

Problem is that if I want to add any of products in cart (basket) I am getting empty page.

I've uploaded default icons back, but, problem is still there.

I would really appreciate advice is it possible to fix this and not loose work of adding all those products.

thank you
Peter

This is indicative of a mis edit to a php file - -you can check dates of the files as a start and then read the tutorial and maybe get the debug utility to trace the issue

https://www.zen-cart.com/tutorials/index.php?article=82