check for Session when the website is loading

[eitai]

Hi im using nextAuth togther with our backend when the user try to login or register he make a call to our backend that generate a JWT and save it on the cookies.

now i want to check each time the user is loading or refreshing the page for the validation of the JWT.
when I try to use the getSession OR useSession in _app file it dosent work and make some errors .
what is the right way to do that?