Canonical tag

Hello,

I’m trying to find out if your theme is managing canonical tags automatically.
In the code there is a canonical tag that has to be deleted (or manage somehow) but I don’t know how to do it.

This is an example where the canonical tag is setted on the same page instead of the real one.
https://www.agenzia-di-traduzione.it/traduzione-italiano-francese/

Can you help me to understanwhy and how to fix it?
Thank in advance