/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/ is in qml-module-org-kde-kirigami2 5.44.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/ActionButton.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/ActionIconGroup.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/ActionMenuItem.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/ActionMenuItemBase.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/ActionMenuItemQt510.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/ActionMenuItemQt59.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/ActionsMenu.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/CornerShadow.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/DefaultListItemBackground.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/EdgeShadow.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/PageActionPropertyGroup.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/PrivateActionToolButton.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/RefreshableScrollView.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/kirigami.2/private/SwipeItemEventFilter.qml