XF 2.0 Error sharing link created for facebook

[peppefark]

Hi, when I share a place from the button below with the facebook icon, the link that creates me is: https://www.clubcuoresportivo.it/threads/giulietta-spider-veloce-1-600.3/
instead the real link of the article is: https://www.clubcuoresportivo.it/forum/threads/giulietta-spider-veloce-1-600.3/

How can I solve?
Thank you

 

[Paul B]

What is the Board URL set to in the ACP?