upgrade problem ( gstreamer1.0-plugins-good:i386 )

[Piotr Skwarna]

apt update;apt full-upgrade -y;apt autoremove -y --purge
Hit:1 https://apt.releases.hashicorp.com lunar InRelease
Hit:2 https://packages.cloud.google.com/apt cloud-sdk InRelease
Hit:3 https://repo.steampowered.com/steam stable InRelease
Hit:4 http://archive.ubuntu.com/ubuntu noble InRelease
Hit:5 https://packages.microsoft.com/repos/code stable InRelease
Hit:6 http://security.ubuntu.com/ubuntu noble-security InRelease
Hit:7 https://download.docker.com/linux/ubuntu lunar InRelease
Hit:8 http://archive.ubuntu.com/ubuntu noble-updates InRelease
Hit:9 https://dl.google.com/linux/chrome/deb stable InRelease
Hit:10 http://archive.ubuntu.com/ubuntu noble-backports InRelease
Ign:11 https://ppa.launchpadcontent.net/kubuntu-ppa/backports/ubuntu noble InRelease
Err:12 https://ppa.launchpadcontent.net/kubuntu-ppa/backports/ubuntu noble Release
  404 Not Found [IP: 2620:2d:4000:1::81 443]
Reading package lists... Done
E: The repository 'https://ppa.launchpadcontent.net/kubuntu-ppa/backports/ubuntu noble 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.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Error!
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 gstreamer1.0-plugins-good:i386 : Depends: libsoup2.4-1:i386 (>= 2.48) or
                                           libsoup-3.0-0:i386 but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 696 not upgraded.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 6.8.0-11.11-generic 6.8.0-rc4
Uname: Linux 6.8.0-11-generic x86_64
ApportVersion: 2.28.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
Date: Thu Mar 28 15:11:04 2024
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed maybe-ubiquity quiet splash ---
InstallationDate: Installed on 2023-04-13 (350 days ago)
InstallationMedia: Kubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: ubiquity
Symptom: installation
UpgradeStatus: Upgraded to noble on 2024-02-22 (35 days ago)