"QtQuick.LocalStorage" is not installed

Question

i'm using localStorage for saving user Settings :

import QtQuick.LocalStorage 2.0  

i get this error while compiling it :

module "QtQuick.LocalStorage" is not installed

Answer 1

I Removed Content of Debug Folder and then 'run Qmake' and then Build was successful and no errors at all (i changed to 5.11 and 5.8 with no result)