I've noticed that over the past two months, Google has been indexing multiple versions of my main collection page. For example, my main page is example.com/collection/kitchen-tile, but Google is also indexing similar pages like example.com/collection/kitchen-tile?dfhpage1, example.com/collection/kitchen-tile?dfhpage2, and so on. Why is this happening, how can I fix it, and is it harmful to my SEO ranking? How can I resolve this issue