javafx如何修复“java未命名模块从y和z读取程序包x”

Question

我是Java新手。我正在尝试用htmlunit登录一个网站。我犯了这些错误。我该怎么修呢。它是JDK 11。这是我的代码：

try {
    WebClient webClient = new WebClient();

    HtmlPage page = (HtmlPage) 
    webClient.getPage("http://ubs.yalova.edu.tr");
    HtmlForm form = page.getFormByName("loginForm");
    form.getInputByName("username").setValueAttribute("myUsername");
    form.getInputByName("password").setValueAttribute("myPassword");

    page = form.getInputByValue("GİRİŞ YAP").click();

    System.out.println(page.asText());
   } catch (IOException e)
   {
       e.printStackTrace();
   }

//module-info.java
    module HelloWorld {
    requires javafx.controls;
    requires javafx.fxml;
    requires htmlunit;

    opens sample;
}

此处的所有错误：https://paste.ubuntu.com/p/Cm7m23RcjS/