Qt for Python (PySide/Shiboken)

I have another problem with qml and Pyside6. On Windows, I have this two files in the same directory and I am using Python 3.9.1. If I run this hello world I always have Network error and I don't see the QML component in the window hello.qml file import QtQuick 2.0 Rectangle { width: 200 height: 200 color: "green" Text { text: "Hello world" anchors.centerIn: parent } TextInput { id: textInput1 x: 60 y: 112 width: 80 height: 20 text: qsTr("Introduzca texto") font.pixelSize: 12 } } hello_qml.py file import sys from pathlib import Path, WindowsPath from PySide6.QtWidgets import QApplication from PySide6.QtQuick import QQuickView from PySide6.QtCore import QUrl app = QApplication(sys.argv) qml_file = str(Path(__file__).parents[0] / 'hello.qml') # qml_file = str(WindowsPath(__file__).parents[0] / 'hello.qml') print(f'qml file = {qml_file}') url = QUrl(qml_file) view = QQuickView() view.setSource(url) view.show() sys.exit(app.exec_())