Issue related to the “Add to cart on product list” feature

Hi!
First of all, thank You for this great and customizable plugin.
I have one issue which I hope You could help me to resolve.
When I click on the add to cart button after I choose the variation options, it’s redirecting me to an undefined URL page.
Please check the above describe process in action in this video.
At first, I’ll add to cart one simple product and then a variation product.
Video URL: https://www.loom.com/share/1d93f83b1d9e49b29e41ce9cfde407f8
Looking forward to Your response.
Thank You in advance!