WebView does not load url

Mark81

I'm trying a very simple test application on Raspberri Pi 3, with a Buildroot environment and Qt 5.12.5.

main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QtWebView/QtWebView>

int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

    QGuiApplication app(argc, argv);
    QtWebView::initialize();

    QQmlApplicationEngine engine;
    const QUrl url(QStringLiteral("qrc:/main.qml"));
    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated, &app, [url](QObject *obj, const QUrl &objUrl) {
        if (!obj && url == objUrl) QCoreApplication::exit(-1);
    }, Qt::QueuedConnection);
    engine.load(url);

    return app.exec();
}

main.qml

import QtQuick 2.12
import QtQuick.Window 2.12
import QtWebView 1.1

Window {
    visible: true
    width: 640
    height: 480

    WebView {
        url: "http://www.google.it"

        onLoadProgressChanged: console.log(loadProgress)
        onLoadingChanged: console.log(loading)
    }
}

Here the output:

# ./testWeb --no-sandbox
QML debugging is enabled. Only use this in a safe environment.
[0203/081353.795855:WARNING:resource_bundle_qt.cpp(116)] locale_file_path.empty() for locale 
[0203/081353.906904:WARNING:resource_bundle_qt.cpp(116)] locale_file_path.empty() for locale

The screen shows the blank window only.
I don't think the warnings about the locale are critical to load an URL (anyway I'm trying to understand how to fix them).

Any idea?
Thanks in advance

Mark81

Well, it was simple enough:

    anchors.fill: parent