Unsolved module "QtApplicationManager" is not installed

[flwwater]

import QtApplicationManager 1.0

when i compile qml file,qt creator says:
QQmlApplicationEngine failed to load component
qrc:/main.qml:3 module "QtApplicationManager" is not installed

OS:kubuntu 20.04
Qt version: 5.12 (defaullt provide by ubuntu repository)

whick package should i install with "sudo apt-get" command ?
thanks!

[raven-worx]

@flwwater
when you are talking about this QtApplicationManager type, you will need a commercial license of Qt first.