Output of killall plasmashell; kstart5 plasmashell:
kf.plasma.quick: Applet preload policy set to 1
file:///usr/share/plasma/plasmoids/org.kde.plasma.systemmonitor/contents/ui/main.qml:54: TypeError: Cannot read property 'length' of undefined
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
file:///usr/share/ksysguard/sensorfaces/org.kde.ksysguard.linechart/contents/ui/LineChart.qml:72:9: Unable to assign [undefined] to bool
trying to show an empty dialog
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
trying to show an empty dialog
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:534:9: QML Label: Binding loop detected for property "height"
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:493:13: QML Label: Binding loop detected for property "height"
trying to show an empty dialog
qml: Reading resources from configuration: [{"sourceName":"group-of-sources","alias":"GPU","overrideLimitTemperatures":false,"warningTemperature":70,"meltdownTemperature":90,"virtual":true,"childSourceObjects":{"nvidia-smi":{"temperature":0}}},{"sourceName":"group-of-sources","alias":"CPU Package","overrideLimitTemperatures":false,"warningTemperature":70,"meltdownTemperature":90,"virtual":true,"childSourceObjects":{"lmsensors/coretemp-isa-0000/Core_0":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_1":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_2":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_3":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_4":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_5":{"temperature":0},"lmsensors/coretemp-isa-0000/Package_id_0":{"temperature":0}}}]
file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:30:1: QML DropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth"
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:493:13: QML Label: Binding loop detected for property "height"
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:534:9: QML Label: Binding loop detected for property "height"
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:554:5: QML Label: Binding loop detected for property "height"
file:///usr/share/plasma/plasmoids/org.kde.plasma.kicker/contents/ui/CompactRepresentation.qml:55: TypeError: Cannot read property 'height' of null
file:///usr/share/plasma/plasmoids/org.kde.plasma.kicker/contents/ui/CompactRepresentation.qml:125: Error: Qt.createQmlObject(): failed to create object:
file:///usr/share/plasma/plasmoids/org.kde.plasma.kicker/contents/ui/inline:1:1: Type DashboardRepresentation unavailable
file:///usr/share/plasma/plasmoids/org.kde.plasma.kicker/contents/ui/DashboardRepresentation.qml:31:1: plugin cannot be loaded for module "org.kde.plasma.private.shell": Cannot load library /usr/lib/qt/qml/org/kde/plasma/private/shell/libplasmashellprivateplugin.so: (/usr/lib/libKF5TextEditor.so.5: undefined symbol: _ZN9KLineEdit16returnKeyPressedERK7QString)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
file:///usr/share/ksysguard/sensorfaces/org.kde.ksysguard.linechart/contents/ui/LineChart.qml:72:9: Unable to assign [undefined] to bool
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
Error: cannot change the containment to AppletsLayout
file:///usr/share/plasma/plasmoids/org.kde.plasma.systemmonitor/contents/ui/main.qml:54: TypeError: Cannot read property 'length' of undefined
Error: cannot change the containment to AppletsLayout
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/Tooltip.qml:66:9: QML GridLayout (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth"
libkcups: CUPS-Get-Printers last error: 1030 No destinations added.
libkcups: Create-Printer-Subscriptions last error: 0 successful-ok
libkcups: Get-Jobs last error: 0 successful-ok
libkcups: Get-Jobs last error: 0 successful-ok
Cyclic dependency detected between "file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml" and "file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationHeader.qml"
Plasma Shell startup completed
Plasma Shell startup completed
Plasma Shell startup completed
libkcups: 0
libkcups: 0
trying to show an empty dialog
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
kf.quickcharts.datasource: ModelSource: Invalid column 1
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qt.core.qabstractitemmodel.checkindex: Index QModelIndex(-1,-1,0x0,QObject(0x0)) is not valid (expected valid)
qml: temp unit: 0
Having tried the workaround proffered in the announcement thread, I can check my downgraded kio version:
$ pacman -Q kio
warning: config file /etc/pacman.conf, line 100: directive 'IgnorePkg' in section 'multilib' not recognised.
kio 5.79.0-1
Running Kate from the terminal still returns:
$ kate
kate: symbol lookup error: /usr/lib/libKF5TextEditor.so.5: undefined symbol: _ZN9KLineEdit16returnKeyPressedERK7QString
After killall plasmashell; kstart5 plasmashell I receive an output for clicking the application dashboard icon, “Show Alternatives…,” and “Add Widgets…” (in that order):
file:///usr/share/plasma/plasmoids/org.kde.plasma.kicker/contents/ui/CompactRepresentation.qml:115: TypeError: Cannot call method 'toggle' of null
file://usr/share/plasma/plasmoids/org.kde.plasma.kicker/contents/ui/CompactRepresentation.qml:115: TypeError: Cannot read property 'toggle' of null
"file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/explorer/AppletAlternatives.qml"
"Error loading QML file.\n27: plugin cannot be loaded for module \"org.kde.plasma.private.shell\": Cannot load library /usr/lib/qt/qml/org/kde/plasma/private/shell/libplasmashellprivateplugin.so: (/usr/lib/libKF5TextEditor.so.5: undefined symbol: _ZN9KLineEdit16returnKeyPressedERK7QString)\n"
Alternatives UI does not inherit from Dialog
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/explorer/WidgetExplorer.qml:32:1: plugin cannot be loaded for module "org.kde.plasma.private.shell": Cannot load library /usr/lib/qt/qml/org/kde/plasma/private/shell/libplasmashellprivateplugin.so: (/usr/lib/libKF5TextEditor.so.5: undefined symbol: _ZN9KLineEdit16returnKeyPressedERK7QString)