我的Geckofx浏览器无法加载youtube页面

Question

我的浏览器（Geckofx）无法在youtube页面上显示为什么？

图片：https://i.stack.imgur.com/yGqfq.png

        public frmMain()
        {
            InitializeComponent();
            Xpcom.Initialize("Firefox");
        }

        private void frmMain_Load(object sender, EventArgs e)
        {
            var browser = new GeckoWebBrowser { Dock = DockStyle.Fill };
            browser.Navigate(txtUrl.Text);
            this.pContainer.Controls.Add(browser);
            Gecko.GeckoPreferences.Default["extensions.blocklist.enabled"] = false;
        }

        private void txtUrl_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char)13)//엔터
                browser.Navigate(txtUrl.Text);
        } ```