I am a beginner with selenium, I am doing a test but I do not understand why it does not work.
Here are my code and the following error.

```
 import org.openqa.selenium.*;
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.WebElement;
 import org.openqa.selenium.htmlunit.HtmlUnitDriver;
 public class PruebaHTMLUnit {
    public static void main(String[] args) {

WebDriver driver = new HtmlUnitDriver();
driver.get("http://www.google.com");
WebElement element = driver.findElement(By.name("q"));
element.sendKeys("Guru99");
element.submit();
System.out.println("Page title is: " + driver.getTitle());

driver.quit();
}
}

```

And the error:

> 
> 
> ```
> Build info: version: '3.5.2', revision: '10229a9', time: '2017-08-21T17:29:55.15Z'
> System info: host: 'MVILLEGAS764', ip: '169.254.106.219', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version:
> 
> ```
> 
> '1.8.0\_144'
>  Driver info: driver.version: HtmlUnitDriver
>  at org.openqa.selenium.htmlunit.HtmlUnitDriver.findElementByName(HtmlUnitDriver.java:1293)
>  at org.openqa.selenium.By$ByName.findElement(By.java:303)
>  at org.openqa.selenium.htmlunit.HtmlUnitDriver$4.call(HtmlUnitDriver.java:1970)
>  at org.openqa.selenium.htmlunit.HtmlUnitDriver$4.call(HtmlUnitDriver.java:1)
>  at org.openqa.selenium.htmlunit.HtmlUnitDriver.implicitlyWaitFor(HtmlUnitDriver.java:1606)
>  at org.openqa.selenium.htmlunit.HtmlUnitDriver.findElement(HtmlUnitDriver.java:1966)
>  at org.openqa.selenium.htmlunit.HtmlUnitDriver.findElement(HtmlUnitDriver.java:754)
>  at com.villegas.pruebas.PruebasRegresion.PruebaHTMLUnit.main(PruebaHTMLUnit.java:20)
> 
> 
>