Product images not loading on product pages

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I have been asked to look into the following problem.

The site has products with images and is working with a slightly different theme at present.

But the test theme I am trying to push live for the client shows no images on the product pages.

The images are there and are displayed on the site using a different theme, the images are even there on this theme when I go to Customise > Product Page

However, I cannot get them to display on the site, which is why this new theme is not live yet.

I didn’t build the site, so any help would be great, All I know is that it is customised and Shopify cannot help me with the problem, so I’m hoping that someone out there can point me in the right direction, to be honest, I normally build WordPress sites hahaha

Any help, advice or just a push in the right direction would be great, the temporary link is below

https://hq2vnigt637aibn1-37801328780.shopifypreview.com

Thanks

Stephen

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I have no idea what theme this started out as, i didn’t built it, it has been through at least 20 versions before i was asked to look at this problem.

Is there a way to find out what theme this started out as?

I have attached a screengrab of part of the product-template.liquid file, the part that loads the product images.

On the variation that is working the only difference on that part of the code is that class=“product_images_main” has been removed from line 9 but that didn’t fix the problem here.

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no, Why?

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This theme did originally show the product images, but it stopped working when some apps were installed in March/April, I have not been able to find out exactly what apps were installed and removed