Upgrade rhel 7 to rhel 8 using leapp

Hello

I am sorry for my bad english
I tried to upgrade my rhel server 7.9 to 8.6.
the upgrade is OK. but when I restart my server, it still boot on version 7.9
Version leapp used:
[root@redhat67 el8userspace]# rpm -qa | grep leapp
leapp-0.15.0-2.el7_9.noarch
python2-leapp-0.15.0-2.el7_9.noarch
leapp-upgrade-el7toel8-deps-0.17.0-1.el7_9.noarch
leapp-deps-0.15.0-2.el7_9.noarch
leapp-upgrade-el7toel8-0.17.0-1.el7_9.noarch

You will find attached a list of captures with all the details.
captures:
1/ upgrade: the end of the upgrade OK

2/ file-sys : current file system

3/current-version : current version system

4/ leapp-report : /var/log/leapp/leapp-report.txt file content

5/new-sys: the new sys in /var/lib/leapp/el8userspace

6/ boot-content : boot content after upgrade

how to boot on the new version
Best regards,