I need help so i can backup my db file in this Flet app that runs on Android 14

[LARM-TECHs]

Question

I need help backing up my DB file in this Flet app, but I don't know if it's a problem with permissions since Android 14 does not allow me to request storage permission. Can someone give me an idea or a way to do it?

"It creates the .csv file, but it creates it empty."

Code sample

def exportar_base_datos(self):
        fecha_actual = datetime.datetime.now().strftime('%Y-%m-%d')
        nombre_archivo = f"db_backup{fecha_actual}.csv"
        # Abrir el diálogo de guardar archivo con el nombre predeterminado
        self.save_file_dialog.save_file(file_name=nombre_archivo)

    def save_file_result(self, e: ft.FilePickerResultEvent):
        if e.path:
            # Exportar a CSV
            with open(e.path, mode='w', newline='') as file:
                writer = csv.writer(file)
                writer.writerow(["CÓDIGO", "CANTIDAD", "FECHA"])
                productos = self.db_manager.fetch_productos()
                for producto in productos:
                    writer.writerow(producto)

            self.page.add(ft.SnackBar(ft.Text("Base de datos exportada a CSV correctamente."), open=True))
            self.page.update()

Error message

No response

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• I have searched for answers to my question both in the issues and in previous discussions.