Bug 450464

Summary: Crash of plasma, unable to login to graphical session with error `The current theme cannot be loaded`
Product: [Plasma] plasmashell Reporter: Benjamin Reigner <benjireigner>
Component: Startup processAssignee: Plasma Bugs List <plasma-bugs>
Status: CLOSED DOWNSTREAM    
Severity: critical CC: kde, nate, visual-design
Priority: NOR    
Version First Reported In: 5.24.1   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: attachment-4713-0.html

Description Benjamin Reigner 2022-02-17 15:20:58 UTC 
SUMMARY

So, I updated my packages yesterday (like I do everyday) and suddenly I had issues with KDE, I was not able to open the settings window for example and shortcuts to launch applications didn't work.
So I tried rebooting and now I'm in front of the default login screen (instead of the one I did setup a while back and had yesterday morning).
And there is the following message in red:

The current theme cannot be loaded due to the errors below, please select another theme.

file:///usr/share/sddm/theme/breeze/Main.qml:14:1 plugin cannot be loaded for module "org.kde.plasma.core": Cannot load library /usr/lib/qt/qml/org/kde/plasma/core/libcorebindingsplugin.so: (/usr/lib/libKF5KIOCore.so.5: undefined symbol: _ZN8KLibExec14pathCandidatesERK7QString)


Also, when I try to log in, it brings me back to the login screen and the way it does bring me back seems like a crash.


STEPS TO REPRODUCE
1. Update plasma to the latest version (5.24.1 at the moment of writting) on archlinux
2. Reboot
3. You should be prompted with the same error message

OBSERVED RESULT

An error on the login screen and missing custom configuration.
As well as a crash on login.

EXPECTED RESULT

The standard login screen with the user defined configuration.
No crash on login

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.24.1
(available in About System)
KDE Plasma Version: 5.24.1
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
Comment 1 David Edmundson 2022-02-17 15:51:20 UTC 
>file:///usr/share/sddm/theme/breeze/Main.qml:14:1 plugin cannot be loaded for module "org.kde.plasma.core": Cannot load library /usr/lib/qt/qml/org/kde/plasma/core/libcorebindingsplugin.so: (/usr/lib/libKF5KIOCore.so.5: undefined symbol: _ZN8KLibExec14pathCandidatesERK7QString)

Symbol lookup error is always a user problem. Probably your packages are only half installed
Comment 2 Benjamin Reigner 2022-02-17 15:54:36 UTC 
My packages are perfectly well installed I even updated all my packages via tty just before posting this. And I precise that I changed nothing in my configuration lately
Comment 3 Nate Graham 2022-02-17 16:03:15 UTC 
Please contact your distro about it.
Comment 4 Kabir Akzaman 2022-02-17 16:17:20 UTC 
Created attachment 146876 [details]
attachment-4713-0.html

On Thu, 17 Feb 2022, 10:03 pm Nate Graham, <bugzilla_noreply@kde.org> wrote:

> https://bugs.kde.org/show_bug.cgi?id=450464
>
> Nate Graham <nate@kde.org> changed:
>
>            What    |Removed                     |Added
>
> ----------------------------------------------------------------------------
>           Component|Theme - Breeze              |Startup process
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.