Error loading apt-installed QtDataVisualization at runtime on ubuntu

Tom asso

I'm running Qt 5.12 on ubuntu 20.04.3. Qt software components are installed with apt. My C++ application uses Qt DataVisualization . I've installed these apt packages for DataVisualization:

libqt5datavisualization5-dev
qml-module-qtdatavisualization

The app compiles OK, but the runtime cannot find the qml module. My qml file contains this statement, as specified by Qt documentation:

import QtDataVisualization 1.15

But at runtime I get the error:

QQmlApplicationEngine failed to load component
qrc:/main.qml:6 module "QtDataVisualization" version 1.15 is not installed

I get a similar runtime error if qml has "import QtDataVisualization 1.14". Also tried import "QtDataVisualization 1.12" to match the Qt version "5.12" - but get similar error that 1.12 is not installed.
Can someone help please? Thanks!

Tom asso

This page indicates that Qt 5.12 should import DataVisualization 1.2
That resolves my issue.