I was trying to install PostgreSQL 14 database in Ubuntu 22.04 version as per the steps provided in the official Postgres site. But while updating the package list, I’m getting an error message. Could someone please help me to resolve this issue?

All the steps that I executed are given below:

root@abc02:~# sudo sh -c 'echo "deb [signed-by=/usr/share/postgresql-common/pgdg/apt.postgresql.org.asc] https://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'


root@abc02:~# sudo apt install curl ca-certificates

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
ca-certificates is already the newest version (20230311ubuntu0.22.04.1).
curl is already the newest version (7.81.0-1ubuntu1.16).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

root@abc02:~# sudo install -d /usr/share/postgresql-common/pgdg

root@abc02:~# sudo curl -o /usr/share/postgresql-common/pgdg/apt.postgresql.org.asc --fail https://www.postgresql.org/media/keys/ACCC4CF8.asc

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  4812  100  4812    0     0   4221      0  0:00:01  0:00:01 --:--:--  4224

root@abc02:~# sudo apt update

Get:1 https://apt.postgresql.org/pub/repos/apt jammy-pgdg InRelease [129 kB]
Err:1 https://apt.postgresql.org/pub/repos/apt jammy-pgdg InRelease
  Unknown error executing apt-key

Reading package lists... Done

W: GPG error: https://apt.postgresql.org/pub/repos/apt jammy-pgdg InRelease: Unknown error executing apt-key
E: The repository 'https://apt.postgresql.org/pub/repos/apt jammy-pgdg InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.