Welcome to Theme Palace Support Forum. We will do our best to asist you with any issues/bugs related to the use of our themes and plugins. Unfortunately we do not provide support for customizations or using 3rd party plugins.
I sent you a comment on GitHub. I added a few lines of code.
Basically there is still an issue when there is no product category configured in the back end. That means you have also to change the query when featured_carousel_product_category is empty or equal to 0.
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