[Interest] Qml Linting Error - Warnings occurred while importing module "QtQuick.Controls":

[Ulf Hermann]

> Warning: QtQuick.Controls uses optional imports which are not supported. 
> Some types might not be found.

This is not an error but a warning. Indeed the compiler will not compile 
your code to C++ because it doesn't know which of the optional imports 
(ie styles) will be active at run time. You can import one specific 
style, for example QtQuick.Controls.Fusion instead of QtQuick.Controls. 
Then the compiler will know what to expect, but you won't be able to use 
a different style at run time anymore.

best regards,
Ulf