klipper plasmoid (plasma-workspace-data) claim qml-module-org-kde-prison (barcode API) to be installed to work. Seems that this package don't exist in Debian so i had need to modify the file
/usr/share/plasma/plasmoids/org.kde.plasma.clipboard/contents/ui/clipboard.qml commenting this code: Component { id: barcodePage BarcodePage { anchors.fill: parent } } regards -- Marco Valli