Text is displayed in an incomprehensible font [duplicate]

Question

When I run the program, the words are written in incomprehensible letters and font. I tried to use: scene.getRoot().setStyle("-fx-font-family: 'serif'"); but it didn't help

CoreText note: Client requested name ".SFNS-Regular", it will get Times-Roman rather than the intended font. All system UI font access should be through proper APIs such as CTFontCreateUIFontForLanguage() or +[NSFont systemFontOfSize:]

public class Main extends Application {
    @Override
    public void start(Stage stage) throws IOException {
        FXMLLoader fxmlLoader = new FXMLLoader(Main.class.getResource("mainwindow.fxml"));
        Scene scene = new Scene(fxmlLoader.load(), 900, 500);
        stage.setTitle("Todo List");
        scene.getRoot().setStyle("-fx-font-family: 'serif'");
        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) {
        launch();
    }

    @Override
    public void stop() throws Exception {
        try {
            TodoData.getInstance().storeTodoItems();
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
    }

    @Override
    public void init() throws Exception {
        try {
            TodoData.getInstance().loadTdoItems();
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
    }
}

Here is an example of the incomprehensible font: