line break is unspported

C:/work/02_tests/untitled3/build/Desktop_Qt_6_8_2_MinGW_64_bit-Debug/.qmltc/appuntitled3/main.cpp:215:5: error: 'QStringLiteral' was not declared in this scope
  215 |     QStringLiteral("Hello World
      |     ^~~~~~~~~~~~~~ 

import QtQuickWindow {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World \n")
}