Sorry, password authentication didn't work

SUSE Linux Enterprise Server 15 SP4

After we update the firmware on our HP Server (iLO and BIOS), we are facing login issue. It shows “Sorry, password authentication didn’t work. Please try again”

We reset the password with simple word like “abcd123” just to make sure we are typing the correct password and tried again. But it shows the same message.

Request your kind guidance!

With regards !
Haresh Pradhan