shopify - I sometimes get 2 pageviews in Tag Assistant and Google Analytics

I have a website connected with Shopify and GTM. I am testing the pageviews that I generate for each page, and see that sometimes I get 1 pageviews and sometimes (or in some specific sections like /cart) I get 2 pageviews. I record tag assistant and cannot see the differences, only that the parameters are different (see images of tag assistant).

I set up UA- in Shopify and UA- in GTM but normally I get 1 pageviews for each page (this happens 80% of the time).

So why sometimes I get 2 pageviews? Any idea of what cause this?

The site is https://nufunactivities.com (https://nufunactivities.com) (if you go to https://nufunactivities.com/cart (https://nufunactivities.com/cart) you will probably see 2 pageviews)

Appreciate any help.

tag assistant view (https://i.stack.imgur.com/MVbTK.png)

pageview in console (https://i.stack.imgur.com/wwVCv.png)

pageview in console (https://i.stack.imgur.com/QvSNZ.png)

tag assistant record - pageview 1 (https://i.stack.imgur.com/TcaW4.png)

tag assistant record - pageview 2 (https://i.stack.imgur.com/BnDNo.png)

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