Qt 6.4 Treeview in qml

[tuno]

I want to create treeview using qt 6.4 in QT Design Studio but indicator not visible. Please help me with the implementation.

My code:

import QtQuick 6.4
import QtQuick.Controls 6.4
import Qt.labs.folderlistmodel 2.1
import QtQuick.Studio.Components 1.0

TreeView {
    id: folderSystemView
    x: 0
    y: 0
    width: 412
    height: 500
    clip: true
    model: FolderListModel {
        id: folderModel
        folder: "file:///E:"
        nameFilters: ["*"]
        showDirs: true
    }
    delegate:TreeViewDelegate {
        id: control
        background: Rectangle {
            implicitHeight: 40
            color: control.highlighted
                   ? control.palette.highlight
                   : (control.treeView.alternatingRows && control.row % 2 !== 0
                   ? control.palette.alternateBase : control.palette.base)
        }
        indicator: SvgPathItem{
            height:40
            width:40
            fillColor: "#000000"
            path: "M350.45,277.5l-164.08,94.73c-16.55,9.56-37.24-2.39-37.24-21.5V161.27c0-19.11,20.69-31.06,37.24-21.5
            l164.08,94.73C367,244.06,367,267.94,350.45,277.5z"
        }

        contentItem: Label {
            clip: false
            text: model.fileName
            elide: Text.ElideRight
            color: control.highlighted ? control.palette.highlightedText : control.palette.buttonText
            visible: !control.editing
        }
    }
}