What is printed when you run 
kcmshell5 kcm_keys 
and the error occurs?

Is kglobalaccel5 running? What does 
systemctl status --user plasma-kglobalaccel.service
say?

Yeah, this is most likely a local setup issue. Maybe something is preventing dbus communication with kglobalaccel daemon, or also kglobalaccel might be installed somehow. Please answer David's questions.

Also are you using Wayland or X11?

(In reply to David Redondo from comment #1)
> What is printed when you run 
> kcmshell5 kcm_keys 
> and the error occurs?

The following text is printed:
Hspell: can't open /usr/share/hspell/hebrew.wgz.sizes.
kf.sonnet.clients.hspell: HSpellDict::HSpellDict: Init failed
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/templates/InlineMessage.qml:265:13: QML SelectableLabel: Binding loop detected for property "implicitWidth"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/templates/OverlaySheet.qml:246:38: QML FocusScope: Binding loop detected for property "contentItemMaximumWidth"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/templates/OverlaySheet.qml:246:38: QML FocusScope: Binding loop detected for property "contentItemMaximumWidth"
org.kde.kcm_keys: "Error while calling allComponents()"
org.kde.kcm_keys: "org.freedesktop.DBus.Error.NoReply" "Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken."

Then shortcuts settings are opened. Error occurs as usual within one minute.

> Is kglobalaccel5 running? What does 
> systemctl status --user plasma-kglobalaccel.service
> say?

● plasma-kglobalaccel.service - KDE Global Shortcuts Server
     Loaded: loaded (/usr/lib/systemd/user/plasma-kglobalaccel.service; static)
     Active: active (running) since Tue 2023-06-13 11:28:56 MSK; 29min ago
   Main PID: 1617 (kglobalaccel5)
      Tasks: 3 (limit: 38162)
     Memory: 5.0M
        CPU: 551ms
     CGroup: /user.slice/user-1000.slice/user@1000.service/background.slice/plasma-kglobalaccel.service
             └─1617 /usr/bin/kglobalaccel5

jun 13 11:56:38 master-h510ms2hv2 kglobalaccel5[1617]: QDBusObjectPath: invalid path "/component/_windows_sample_application_desktop"
jun 13 11:56:38 master-h510ms2hv2 kglobalaccel5[1617]: QDBusObjectPath: invalid path "/component/wine_Programs_windows_sample_application_desktop"
jun 13 11:56:38 master-h510ms2hv2 kglobalaccel5[1617]: QDBusConnection: error: could not send reply message to service "": Marshalling failed: Invalid obje>

So this could be due to failed Wine application?

(In reply to Nate Graham from comment #2)
> Also are you using Wayland or X11?

Neither of these. I don't even know what those things are. Just a clean KDE Neon I installed about 2 months ago.

We have a bad objectpath apparently? But why does it only fail when calling allComponents and not earlier (when kdeglobalacceld is registering it)?

(In reply to David Redondo from comment #5)
> We have a bad objectpath apparently? But why does it only fail when calling
> allComponents and not earlier (when kdeglobalacceld is registering it)?

I'm a new user here and IDK what is happening under the hood and how this crap works, I just want to fix it. 
Do you know how to get rid of calling that objectpath?

(In reply to Aleksander from comment #6)
> (In reply to David Redondo from comment #5)
> > We have a bad objectpath apparently? But why does it only fail when calling
> > allComponents and not earlier (when kdeglobalacceld is registering it)?
> 
> I'm a new user here and IDK what is happening under the hood and how this
> crap works, I just want to fix it. 
> Do you know how to get rid of calling that objectpath?

Sorry the question was not directed at you, just a thought relating to the bug. It's something that happens soemtimes, people writing what they think about a bug or findings of their investigation so far so it doesn't get lost and to share with others developers that are looking at the report. Also is helpful when adding another person to the report as I did.

Hi there. 
The problem is in ~/.config/kglobalshortcutsrc. More precisely, most likely wine (I assume) added a shortcut to the code, and after deleting wine, it did not delete the shortcut, which is why the plasma-kglobalaccel.service service broke(Or the user simply incorrectly added opening the application via shortcut, which is why everything broke). This service complains about invalid path "/component/_windows_sample_application_desktop" and invalid path "/component/wine_Programs_windows_sample_application_desktop", so you need to open ~/.config/kglobalshortcutsrc and delete any lines associated with _windows_sample_application_desktop and wine_Programs_windows_sample_application_desktop. It's also worth checking ~/.local/share/applications. Good luck

I am getting this issue after upgrading to plasma 6