QtQuick.Dialogs was imported. Source code to declare the dialog:

MessageDialog {
    id: messageDialog
    text: "Some text"
    informativeText: "Bit more text"
    buttons: MessageDialog.Ok | MessageDialog.Cancel
} 

It causes the following runtime error:

qrc:/DraftQML/main.qml:16: TypeError: Cannot read property 'Ok' of undefined

I don't face this issue when using Qt 6.7.3.

I also get the following warning because of importing QtQuick and QtQuick.Dialogs (which I don't have when using Qt 6.7.3).

warning: Ambiguous type detected. FolderDialog 6.0 is defined multiple times. [import]