Product thumbnail doesn't appear when using swatches

Hello,
I have a problem when using swatches: product thumbnail doesn’t appear.
If I select a variation from swatches, I am able to scroll other images through the arrow, but not through the thumbnails because they are not appear.
Have a look at this image

On private content I’ve put 2 products: 1 with swatches and 1 without so you can check.
Thanks

Hello,

Could you please disable all plugins that are not related to our theme and provide us your admin access so we can check it?

Thank you in advance

I tried to disable it, but nothing changed…
Plugin not releated to themes are: Woocommerce, smush, CF7 and stripe payment gateway

You can find admin access below, but please don’t disable plugin because site is on production

You need to upload some default thumbnails gallery for the parent product and feature images for all variations.

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