Dear Maintainer,

Sddm-greeter returns warning to journal

sddm-greeter[20366]: file:///usr/share/sddm/themes/debian-maui/Main.qml:41:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated.  Use this syntax instead: function onFoo(<arguments>) { ... }

Seems it is a change in QT in change of syntax for connections.
https://stackoverflow.com/questions/62297192/qml-connections-implicitly-defined-onfoo-properties-in-connections-are-deprecat

Simmilary in qt-5 manual
https://doc.qt.io/qt-5/qml-qtqml-connections.html

It doesn't seem to impact the functionality of the theme.