Ubuntu/Components package for Ubuntu 18.04 X86_64 (qt5)

[Muehlkreuz]

After a HW crash I'm restoring QML App development on a new machine
but can't find a Ubuntu/Components package. qmlscene is installed,
QT_SELECT=5

Tried to copy the Ubuntu/Components directory from the crashed machine and get:
Invalid QML element name "i18n"; type names must begin with an uppercase letter.
QML is:
import QtQuick 2.2
import Ubuntu.Components 1.1
Rectangle { Text { text: "Hello world!" } }
The output window is OK when the 2nd import is commented out.

Tried to compile from source I found on GitHub: qt-ubuntu-components-master
Same result.

Also found this ancient stuff: qt-components-ubuntu_0.1.24~quantal1 Not useable.

Search engines are no real help, maybe someone here on the forum will give me a clue, thanks.