Please help: pgAdmin 4 on Amazon Linux 2

Greetings,

I am trying to install pgAdmin 4 on Amazon Linux 2. PostgreSQL is already
installed and working fine. I believe Amazon Linux 2 is based on RedHat.

I am doing the following:

[root(at)a-1lxumlkkw4mu4 ~]# rpm -i
https://ftp.postgresql.org/pub/pgadmin/pgadmin4/yum/pgadmin4-redhat-repo-2-1.noarch.rpm
warning: /var/tmp/rpm-tmp.ZEygli: Header V3 RSA/SHA256 Signature, key ID
210976f2: NOKEY
[root(at)a-1lxumlkkw4mu4 ~]# yum install pgadmin4
Loaded plugins: amzn_workspaces_filter_updates, halt_os_update_check,
priorities, update-motd
amzn2-core
| 3.7 kB 00:00:00

amzn2extra-GraphicsMagick1.3
| 3.0 kB 00:00:00

amzn2extra-docker
| 3.0 kB 00:00:00
amzn2extra-epel
| 3.0 kB 00:00:00
amzn2extra-gimp
| 1.3 kB 00:00:00
amzn2extra-libreoffice
| 3.0 kB 00:00:00

amzn2extra-mate-desktop1.x
| 3.0 kB 00:00:00

epel/x86_64/metalink
| 15 kB 00:00:00

firefox
| 2.2 kB 00:00:00
google-chrome
| 1.3 kB 00:00:00
https://ftp.postgresql.org/pub/pgadmin/pgadmin4/yum/redhat/rhel-2-x86_64/repodata/repomd.xml:
[Errno 14] HTTPS Error 404 - Not Found
Trying other mirror.

One of the configured repositories failed (pgadmin4),
and yum doesn't have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work "fix" this:

1. Contact the upstream for the repository and get them to fix the
problem.

2. Reconfigure the baseurl/etc. for the repository, to point to a
working
upstream. This is most often useful if you are using a newer
distribution release than is supported by the repository (and the
packages for the previous distribution release still work).

3. Run the command with the repository temporarily disabled
yum --disablerepo=pgAdmin4 ...

4. Disable the repository permanently, so yum won't use it by default.
Yum
will then just ignore the repository until you permanently enable it
again or use --enablerepo for temporary usage:

yum-config-manager --disable pgAdmin4
or
subscription-manager repos --disable=pgAdmin4

5. Configure the failing repository to be skipped, if it is
unavailable.
Note that yum will try to contact the repo. when it runs most
commands,
so will have to try and fail each time (and thus. yum will be be
much
slower). If it is a very temporary problem though, this is often a
nice
compromise:

yum-config-manager --save
--setopt=pgAdmin4.skip_if_unavailable=true

failure: repodata/repomd.xml from pgAdmin4: [Errno 256] No more mirrors to
try.
https://ftp.postgresql.org/pub/pgadmin/pgadmin4/yum/redhat/rhel-2-x86_64/repodata/repomd.xml:
[Errno 14] HTTPS Error 404 - Not Found
[root(at)a-1lxumlkkw4mu4 ~]#

I have no idea how to fix this. Any help would sure be appreciated.

Blake McBride