AmazonEC2でcentOS8.2をインストールしGUI環境を実現したい。

前提・実現したいこと

Sever with GUI、Workstation、GNOMEをインストールした。
rootユーザーでstartxを入力した所以下のエラーが表示され進まない。

発生している問題・エラーメッセージ

xauth: file /root/.serverauth.2551 does not exist

X.Org X Server 1.20.8
X Protocol Version 11, Revision 0
Build Operating System: 4.19.34-300.el7.x86_64
Current Operating System: Linux ip-XXX-XXX-XXX-XXX.ap-northeast-1.compute.internal 4.18.0-240.22.1.el8_3.x86_64 #1 SMP Thu Apr 8 19:01:30 UTC 2021 x86_64
Kernel command line: BOOT_IMAGE=(hd0,msdos2)/boot/vmlinuz-4.18.0-240.22.1.el8_3.x86_64 root=UUID=b437cbaa-8fe5-49e4-8537-0895c219037a ro console=ttyS0,115200n8 no_timer_check net.ifnames=0 nvme_core.io_timeout=4294967295 nvme_core.max_retries=10 crashkernel=auto
Build Date: 04 January 2021 04:26:35PM
Build ID: xorg-x11-server 1.20.8-6.1.el8_3
Current version of pixman: 0.38.4
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Fri Apr 23 10:27:02 2021
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
pci id for fd 14: 1013:00b8, driver (null)
MESA-LOADER: failed to open cirrus (search paths /usr/lib64/dri)
failed to load driver: cirrus
(II) modeset(0): Initializing kms color map for depth 16, 6 bpc.
The XKEYBOARD keymap compiler (xkbcomp) reports: