How can I fix duplicate links in my online store?

[onawave]

Hello,

I have duplicate links in my store and I'm trying to figure out how to correct it.

https://www.littlerootz.com/collections/new/new

https://www.littlerootz.com/collections/new

https://www.littlerootz.com/collections/sale

https://www.littlerootz.com/collections/sale/sale

Any advise would be helpful,

Thank you,

[onawave]

also, this page;

https://www.littlerootz.com/collections/all?page=2

I have no idea where this is coming from.