Kde settings crashed when open the app appearence

HI,i install package " kde-meta" a few minutes ago.
but when i open systemsettings5 > app appearence,it crashed
Here is the log
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:60:13: QML Connections: Implicitly defined onFoo properties in Connections are depreca
ted. Use this syntax instead: function onFoo() { … }
file:///usr/lib/qt/qml/org/kde/kcm/GridView.qml:41: TypeError: Value is null and could not be converted to an object
file:///usr/lib/qt/qml/org/kde/kirigami.2/templates/AbstractApplicationHeader.qml:153:9: QML Connections: Implicitly defined onFoo properties in Conn
ections are deprecated. Use this syntax instead: function onFoo() { … }
file:///usr/lib/qt/qml/org/kde/kirigami.2/templates/AbstractApplicationHeader.qml:83:5: QML Connections: Implicitly defined onFoo properties in Conne
ctions are deprecated. Use this syntax instead: function onFoo() { … }
file:///usr/lib/qt/qml/org/kde/kirigami.2/templates/AbstractApplicationHeader.qml:108:9: QML Connections: Implicitly defined onFoo properties in Conn
ections are deprecated. Use this syntax instead: function onFoo() { … }
file:///usr/lib/qt/qml/org/kde/kirigami.2/private/globaltoolbar/BreadcrumbControl.qml:24:5: QML Connections: Implicitly defined onFoo properties in C
onnections are deprecated. Use this syntax instead: function onFoo() { … }
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:52:13: QML ColumnLayout: Cannot anchor to an item that isn’t a parent or sibling.
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:52:13: QML ColumnLayout: Cannot anchor to an item that isn’t a parent or sibling.
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:52:13: QML ColumnLayout: Cannot anchor to an item that isn’t a parent or sibling.
file:///usr/share/kpackage/kcms/kcm_kwindecoration/contents/ui/main.qml:100:29: QML Connections: Implicitly defined onFoo properties in Connections a
re deprecated. Use this syntax instead: function onFoo() { … }
file:///usr/share/kpackage/kcms/kcm_kwindecoration/contents/ui/Themes.qml:101:5: QML Connections: Implicitly defined onFoo properties in Connections
are deprecated. Use this syntax instead: function onFoo() { … }
file:///usr/lib/qt/qml/org/kde/kcm/GridView.qml:41: TypeError: Value is null and could not be converted to an object
file:///usr/lib/qt/qml/org/kde/kirigami.2/templates/AbstractApplicationHeader.qml:153:9: QML Connections: Implicitly defined onFoo properties in Conn
ections are deprecated. Use this syntax instead: function onFoo() { … }
file:///usr/lib/qt/qml/org/kde/kirigami.2/templates/AbstractApplicationHeader.qml:83:5: QML Connections: Implicitly defined onFoo properties in Conne
ctions are deprecated. Use this syntax instead: function onFoo() { … }
file:///usr/lib/qt/qml/org/kde/kirigami.2/private/globaltoolbar/BreadcrumbControl.qml:24:5: QML Connections: Implicitly defined onFoo properties in C
onnections are deprecated. Use this syntax instead: function onFoo() { … }
file:///usr/lib/qt/qml/org/kde/kirigami.2/private/globaltoolbar/PageRowGlobalToolBarUI.qml:65:9: QML RowLayout (parent or ancestor of QQuickLayoutAtt
ached): Binding loop detected for property “maximumWidth”
file:///usr/lib/qt/qml/org/kde/kirigami.2/private/globaltoolbar/PageRowGlobalToolBarUI.qml:65:9: QML RowLayout (parent or ancestor of QQuickLayoutAtt
ached): Binding loop detected for property “maximumWidth”
file:///usr/lib/qt/qml/org/kde/kirigami.2/private/globaltoolbar/PageRowGlobalToolBarUI.qml:65:9: QML RowLayout (parent or ancestor of QQuickLayoutAtt
ached): Binding loop detected for property “maximumWidth”
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:97:13: QML Connections: Implicitly defined onFoo properties in Connections are depreca
ted. Use this syntax instead: function onFoo() { … }
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:97:13: QML Connections: Implicitly defined onFoo properties in Connections are depreca
ted. Use this syntax instead: function onFoo() { … }
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:97:13: QML Connections: Implicitly defined onFoo properties in Connections are depreca
ted. Use this syntax instead: function onFoo() { … }
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:97:13: QML Connections: Implicitly defined onFoo properties in Connections are depreca
ted. Use this syntax instead: function onFoo() { … }
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:97:13: QML Connections: Implicitly defined onFoo properties in Connections are depreca
ted. Use this syntax instead: function onFoo() { … }
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:97:13: QML Connections: Implicitly defined onFoo properties in Connections are depreca
ted. Use this syntax instead: function onFoo() { … }
file:///usr/share/kpackage/kcms/kcm_style/contents/ui/main.qml:97:13: QML Connections: Implicitly defined onFoo properties in Connections are depreca
ted. Use this syntax instead: function onFoo() { … }

Hello,

From where and how you did that? Are you sure is called like that?

yes,im sure.
I installed it from pacman just like"pacman -S kde-meta"
This problem have been existed for a long time , it wasnt this packages fault i think

Today , i`ve already upgraded my manjaro and also, i retried to enter the setting interface ,but it still crashed , same problem.

This is usually down to using a broken theme.
To reset theme to breeze use

lookandfeeltool -a org.kde.breeze.desktop

It reset theme to breeze , but when i open the systemsettings5>app appearence ,it still crashed