"Type FileDialog unavailable"

[utuser]

I'm having problems using FileDialog component in Main.qml file.
When I use the FileDialog {} anywhere in the QML file and build the project in desktop mode, the terminal returns:

qrc:/Main.qml:111:17: Type FileDialog unavailable
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/DefaultFileDialog.qml:41:1: module "QtQuick.Controls" version 1.2 is not installed 
     import QtQuick.Controls 1.2 
     ^

and a blank screen is displayed (also on a phone).
It works when built in qtcreator.

I'm almost sure I have all the necessary packages installed and imported.
The same libraries are used in sturmreader app document importer file:
https://gitlab.com/TronFortyTwo/sturmreader/-/blob/master/ui/qml/ImporterPortable.qml

My project is using QML and C++.

I wonder if it means, that some different default version of QtQuick.Controls is set somewhere in the clickable or project settings.

Thanks for help in advance

[kugiigi]

As far as I know, QQC1 isn't available in UT Only QQC2. Also, file dialog isn't what works in UT. You'll have to use ContentHub