Upgrade failed, plasma6 applications 25.04.1 on Ubuntu 25.04 server

Ubuntu Version:

25.04

Desktop Environment (if applicable):

KDE Plasma

Problem Description:

I am running Ubuntu Server 25.04 with plasma6 desktop.
I am using plucky-backports for the latest plasma6

Today I did an upgrade to applications 25.04.1 and the upgrade did not complete.

Now when I try to upgrade I get this.

Relevant System Information:

root@starfire:~# apt update
Hit:1 https://downloads.plex.tv/repo/deb public InRelease
Ign:2 https://download.webmin.com/download/newkey/repository stable InRelease                  
Hit:3 https://download.webmin.com/download/newkey/repository stable Release                    
Hit:5 http://security.ubuntu.com/ubuntu plucky-security InRelease                              
Hit:6 http://us.archive.ubuntu.com/ubuntu plucky InRelease                                     
Hit:7 http://us.archive.ubuntu.com/ubuntu plucky-updates InRelease               
Hit:8 http://us.archive.ubuntu.com/ubuntu plucky-backports InRelease             
Hit:9 https://ppa.launchpadcontent.net/kubuntu-ppa/backports/ubuntu plucky InRelease
3 packages can be upgraded. Run 'apt list --upgradable' to see them.

root@starfire:~# apt full-upgrade
You might want to run 'apt --fix-broken install' to correct these.
Unsatisfied dependencies:
 libcantorlibs28abi2 : Depends: libcantorlibs-data (>= 4:25.04.1-0ubuntu1~ubuntu25.04~ppa1) but it is not installed
Error: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

root@starfire:~# apt --fix-broken install
Correcting dependencies... Done 
The following packages were automatically installed and are no longer required:
  libcantorlibs28
  libkirigamiaddonsstatefulapp6
  qml6-module-org-kde-kirigamiaddons-labs-components
  qml6-module-org-kde-kirigamiaddons-settings
  qml6-module-org-kde-kirigamiaddons-statefulapp
Use 'apt autoremove' to remove them.

Installing dependencies:
  libcantorlibs-data

Summary:
  Upgrading: 0, Installing: 1, Removing: 0, Not Upgrading: 3
  316 not fully installed or removed.
  Download size: 0 B / 8,528 B
  Space needed: 20.5 kB / 387 GB available

Continue? [Y/n]  
(Reading database ... 355259 files and directories currently installed.)
Preparing to unpack .../libcantorlibs-data_4%3a25.04.1-0ubuntu1~ubuntu25.04~ppa1_all.deb ...
Unpacking libcantorlibs-data (4:25.04.1-0ubuntu1~ubuntu25.04~ppa1) ...
dpkg: error processing archive /var/cache/apt/archives/libcantorlibs-data_4%3a25.04.1-0ubuntu1~ubuntu25.04~ppa1_all.deb (--unpack):
 trying to overwrite '/usr/share/config.kcfg/cantor_libs.kcfg', which is also in package libcantorlibs28 (4:24.12.3-0ubuntu1)
Errors were encountered while processing:
 /var/cache/apt/archives/libcantorlibs-data_4%3a25.04.1-0ubuntu1~ubuntu25.04~ppa1_all.deb
Error: Sub-process /usr/bin/dpkg returned an error code (1)



Screenshots or Error Messages:

What I’ve Tried:


Any help would be appreciated.

Thanks
Don

OK, I got it. I removed libcantorlibs28
dpkg --purge libcantorlibs28
Now apt --fix-broken install worked.

Marking as solved

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