I just have upgraded my forum ( working since 2017 ) to 2.6 ( from 2.4)
During the upgrade i notice that Postgresql 9.5 has been replaced by postgres 12.
the rebuild operation has ended without errors but i have an error 500 on homepage ( or a oops message )
Same error on category page.
The admin is working, the user profil is working , the user list is working, a single post is working.
The top refered in admin is not working.
I have no ideas to solve that.
Thanks you very much