Custom_field image not shown

-- url of the page with the problem -- : mijnpvcwinkel.nl/index.php/alle-merken/p...-heritage-plank-6120
-- HikaShop version -- : 5.1.3
-- Joomla version -- : 5.2.3
-- PHP version -- : 8.3.6
-- Browser(s) name and version -- : Safari 17.6

Hello,

We have two working shops mijninterieurwinkel.nl and mijnpvcwinkel.nl. The same product gives two different results.
Compare the two here:

mijninterieurwinkel.nl/index.php/overzic...ack-plank-kleur-6120
and
mijnpvcwinkel.nl/index.php/alle-merken/p...-heritage-plank-6120

At the bottom of the pages there is a field 'gebruikersklasse'. On the first the image is shown, but on the second it is not found. I have tried .png and .jpg files. I traced the code to the view product/show_block_custom_main.php. On both sites it shows the same code, and the same value in the database, so how can this be possible?

Where can I trace this further? And more important, how do I fix this?

EDIT: I tried to match the different source codes and I did notice why it is not showing:

On mijninterieurwinkel.nl (working site) I found:
<span id="hikashop_product_custom_value_38" class="hikashop_product_custom_value">
<img class="hikashop_custom_image_link" src="/index.php/component/hikashop/order/download/field_table-product/field_namekey-Z2VicnVpa2Vyc2tsYXNzZQ==/name-dmlzZ3JhYXQtcGl0LmpwZw==" alt="visgraat-pit.jpg">

On mijnpvcwinkel.nl (not working site) I found:
<span id="hikashop_product_custom_value_30" class="hikashop_product_custom_value">
<img class="hikashop_custom_image_link" src="/index.php/component/hikashop/order/download/field_table-product/field_namekey-Z2VicnVpa3NrbGFzc2U=/name-NjEwMHBpdC5qcGc=&order_token=" alt="6100pit.jpg"></span>

The big difference is that in the second there is an addition "&order_token=". When I remove this the image shows! The big question is: Where is this coming from. I can't find it, browsing the php files for how the line is built. Maybe there is some option I should have set of reset. I don't know.
Hope to hear from you guys.

Nicolas,

Thanks for the quick reply (as always).
I have some overrides and therefore there is no change in my problem. Can you point me to the right files, so I can check if my overrides are still usefull and in place? Maybe I can merge some of my changes into a new file, to update my changes.

Thanks in advance.

Thanks Nicolas. This worked out!