Qt Virtual Keyboard Settings problem

[Husky]

Hello Community,
I have compiled the virtual Keyboard with all languages. This is working. But i can't import virtual Keyboard settings. Qt Module is not installed...
But when i search in the Documantation there is nothing about this. It seems that it should be automatically installed, when virtual Keyboard is installed?

Do you have any suggestions?

My Application is using qt 5.8.

Best regards,
Julian