Anyone having logging in issue with ultra96v2 after building 2019.2 image?

Here is what I did downloaded the 2019.2 bsp and used petalinux-create, config, build and package. Then to the root partition extracted the rootfs.tar.gz and copied boot.bin, image.ub and system.dtb to the boot partition. It boots up to login prompt and the username “root” doesn’t work

If you know whats wrong please help me out. Thanks