前面提到的错误似乎非常顽固，即使在 Plasma 5.24.7 上也是如此。无法重命名桌面上的文件，也无法在开始栏中输入超过 1 个字母。浏览器下载的提示窗口也不允许我重命名。所以我重新启动：
kbuildsycoca5 && kquitapp5 plasmashell && kstart5 plasmashell
输出如下：
kbuildsycoca5 && kquitapp5 plasmashell && kstart5 plasmashell
kbuildsycoca5 running...
Omitting both --window and --windowclass arguments is not recommended
(base) stepski@stepski:~$ kf.plasma.quick: Applet preload policy set to 1
qml: PlasmaExtras.ScrollArea is deprecated. Use PlasmaComponents3.ScrollView instead.
Plasma Shell startup completed
Trying to use rootObject before initialization is completed, whilst using setInitializationDelayed. Forcing completion
Entry is not valid "org.kde.kontact.desktop" QSharedPointer(0x56171baa3220)
Entry is not valid "org.kde.kontact.desktop" QSharedPointer(0x56171b8bd180)
file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:18:1: QML DropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth"
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"
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
file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/ExpandedRepresentation.qml:165:9: QML HiddenItemsView: Binding loop detected for property "implicitHeight"
libkcups: 0
libkcups: 0
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
org.kde.klipper: Invalid or non-local url for preview: QUrl("desktop:/awt-pj-ss23-5gmsUi.mp4")
org.kde.klipper: Invalid or non-local url for preview: QUrl("desktop:/awt-pj-ss23-5gmsUi.pdf")
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.
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.
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations.
Hspell: can't open /usr/share/hspell/hebrew.wgz.sizes.
kf.sonnet.clients.hspell: HSpellDict::HSpellDict: Init failed
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
kf.kio.core: Invalid URL: QUrl("")
file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/Task.qml:370: Unable to assign [undefined] to QString
QPainter::begin: Paint device returned engine == 0, type: 2
QWidget::render: Cannot render with an inactive painter
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
qt.gui.imageio.jpeg: Corrupt JPEG data: premature end of data segment
trying to show an empty dialog
file:///usr/share/plasma/plasmoids/org.kde.plasma.kickoff/contents/ui/ApplicationsPage.qml:116: TypeError: Cannot call method 'forceActiveFocus' of null
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "width"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "width"
QQmlEngine::setContextForObject(): Object already has a QQmlContext
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "implicitHeight"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "implicitHeight"
QQmlEngine::setContextForObject(): Object already has a QQmlContext
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "implicitHeight"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/ScrollablePage.qml:200:9: QML MouseArea: Binding loop detected for property "implicitHeight"
QQmlEngine::setContextForObject(): Object already has a QQmlContext
Could not find the Plasmoid for Plasma::FrameSvgItem(0x56171a606e10) QQmlContext(0x56171bee11a0) QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml")
Could not find the Plasmoid for Plasma::FrameSvgItem(0x56171a606e10) QQmlContext(0x56171bee11a0) QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml")
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitWidth"
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitWidth"
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitHeight"
Could not find the Plasmoid for Plasma::FrameSvgItem(0x56171b58c7a0) QQmlContext(0x56171bee11a0) QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml")
Could not find the Plasmoid for Plasma::FrameSvgItem(0x56171b58c7a0) QQmlContext(0x56171bee11a0) QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml")
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitWidth"
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitWidth"
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitHeight"
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitWidth"
Could not find the Plasmoid for Plasma::FrameSvgItem(0x56171dc40fb0) QQmlContext(0x56171bee11a0) QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml")
Could not find the Plasmoid for Plasma::FrameSvgItem(0x56171dc40fb0) QQmlContext(0x56171bee11a0) QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml")
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitWidth"
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitWidth"
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitHeight"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/components.3/ScrollView.qml:45:27: QML ScrollBar: Binding loop detected for property "visible"
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/SelectableLabel.qml:38:5: QML TextArea: Binding loop detected for property "implicitHeight"
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationItem.qml:219:21: QML SelectableLabel: Binding loop detected for property "implicitWidth"
终端命令仍在运行。同时，我尝试直接访问 Kubuntu 论坛，提供支持以修复此错误 - 但似乎我没有权限作为新用户发布任何内容。