Upgrading from 7.9 to 8

Hello,

I am traying to upgrade from rh 7.9 to rh 8.. everything goes ok with the leapp preupgrade, but when I run leapp upgrade, after it install all rh8 software, it tell me to reboot, the host reboot but the os isnt upgraded it, it still in 7.9 version..

what can go wrong?, where can i finf what was wrong?

thank you