[plasmashell] [Bug 450464] New: Crash of plasma, unable to login to graphical session with error `The current theme cannot be loaded`

[Benjamin Reigner]

https://bugs.kde.org/show_bug.cgi?id=450464

            Bug ID: 450464
           Summary: Crash of plasma, unable to login to graphical session
                    with error `The current theme cannot be loaded`
           Product: plasmashell
           Version: 5.24.1
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: critical
          Priority: NOR
         Component: Theme - Breeze
          Assignee: plasma-bugs at kde.org
          Reporter: benjireigner at gmail.com
                CC: visual-design at kde.org
  Target Milestone: 1.0

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

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