SP Simple Portfolio, duplicate item in frontend whit different url

Hi, in the portfolio component I have a single item, but in the frontend the same item responds to 2 different urls, this creates problems in seo because they are duplicated meta titles.

What can I depend on?

the urls:

https://www.what-studio.com/portfolio-agenzia-di-comunicazione/campagna-pubblicitaria/pubblicita-multisoggetto-centro-commerciale-seconda

https://www.what-studio.com/portfolio-agenzia-di-comunicazione/organizzazione-eventi/pubblicita-multisoggetto-centro-commerciale-seconda

the first link is correct, the second is not, the item is not in that category or tag.