I'm trying to install ros2 humble but I'm getting the following error

edit

According to instructions in ros.org, when I run

**sudo apt update && sudo apt install locales**

Im getting this :

pans@ubuntu:~$ sudo apt update && sudo apt install locales
Ign:1 cdrom://Ubuntu 22.04.1 LTS _Jammy Jellyfish_ - Release amd64 (20220809.1) jammy InRelease
Err:2 cdrom://Ubuntu 22.04.1 LTS _Jammy Jellyfish_ - Release amd64 (20220809.1) jammy Release
  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Ign:3 http://packages.ros.org/ros/ubuntu jammy InRelease
Hit:4 http://archive.ubuntu.com/ubuntu jammy InRelease
Hit:5 http://archive.ubuntu.com/ubuntu jammy-updates InRelease
Err:6 http://packages.ros.org/ros/ubuntu jammy Release
  404  Not Found [IP: 140.211.166.134 80]
Hit:7 http://archive.ubuntu.com/ubuntu jammy-backports InRelease
Get:8 http://packages.ros.org/ros2/ubuntu jammy InRelease [4,673 B]
Err:8 http://packages.ros.org/ros2/ubuntu jammy InRelease  
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654
Hit:9 http://archive.ubuntu.com/ubuntu jammy-security InRelease
Reading package lists... Done
E: The repository 'cdrom://Ubuntu 22.04.1 LTS _Jammy Jellyfish_ - Release amd64 (20220809.1) jammy Release' does not have a Release file.
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.
E: The repository 'http://packages.ros.org/ros/ubuntu jammy Release' does not have a Release file.
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.
W: GPG error: http://packages.ros.org/ros2/ubuntu jammy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654
E: The repository 'http://packages.ros.org/ros2/ubuntu jammy 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.

Can someone please help me how to resolve this issue and install ros2 humble? Because I think if this is not resolved, then ros2 won't be resolved. I'm also not able to run

sudo apt-update

I even tried https://answers.ros.org/question/3250..., but still not able to fix. So any help is much appreciated!