My code Java for this problem:

import javafx.application.*;
import javafx.beans.value.*;
import javafx.scene.*;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.scene.web.*;
import javafx.stage.*;
import javafx.event.*;
import javafx.scene.input.*;

public class progma extends Application {
    public static void main(String[] x) {
        launch(x);
    }

    @Override
    public void start(Stage prime) {
        WebView w = new WebView();
        WebEngine webengine = w.getEngine();
        TextField urlField = new TextField(); // Thêm TextField cho URL

        // Xử lý sự kiện khi nhấn Enter trong TextField
        urlField.setOnKeyPressed(new EventHandler<KeyEvent>() {
            @Override
            public void handle(KeyEvent event) {
                if (event.getCode() == KeyCode.ENTER) {
                    String url = urlField.getText();
                    webengine.load(url);
                }
            }
        });

        webengine.load("https://google.com");

        VBox root = new VBox();

        // Thêm TextField vào VBox
        root.getChildren().add(urlField);

        // Thêm WebView vào VBox
        root.getChildren().add(w);

        Scene s = new Scene(root, 800, 600);
        prime.setTitle("IE for 2024");
        prime.setScene(s);
        prime.show();

        // Lắng nghe sự thay đổi của cả chiều rộng và chiều cao của Scene
        s.widthProperty().addListener(new ChangeListener<Number>() {
            @Override
            public void changed(ObservableValue<? extends Number> observableValue, Number oldValue, Number newValue) {
                w.setPrefWidth(newValue.doubleValue());
            }
        });

        s.heightProperty().addListener(new ChangeListener<Number>() {
            @Override
            public void changed(ObservableValue<? extends Number> observableValue, Number old, Number new1) {
                w.setPrefHeight(new1.doubleValue());
            }
        });
    }
}

When I run the program and go to an URL (like https://youtube.com), it show the error like:

thg 5 11, 2024 8:46:33 CH com.sun.javafx.webkit.prism.WCMediaPlayerImpl onError
WARNING: onError, errCode=260, msg=ERROR_MEDIA_INVALID
thg 5 11, 2024 8:46:33 CH com.sun.javafx.webkit.prism.WCMediaPlayerImpl onError
WARNING: onError, errCode=260, msg=ERROR_MEDIA_INVALID
thg 5 11, 2024 8:46:33 CH com.sun.javafx.webkit.prism.WCMediaPlayerImpl onError
WARNING: onError, errCode=260, msg=ERROR_MEDIA_INVALID
thg 5 11, 2024 8:46:33 CH com.sun.javafx.webkit.prism.WCMediaPlayerImpl onError
WARNING: onError, errCode=260, msg=ERROR_MEDIA_INVALID

I want to find a way to fix this error.

I try to fix the problem at my code, but it not have any useful, i think is in the JavaFX or the code, or the URL.

My question for this problem (you can answer any question you know):

1. It have a way to fix this error?
2. Where this error begin?
3. How to fix the error?

Additional information:

• OS: Windows 10
• Java version: Java 21.0.3
• JavaFX: OpenJFX 21.0.3