获取不能使用java/硒在铬和边缘中聚焦元素

我在FF中以chrome和边缘运行测试时遇到无法聚焦元素错误，它工作正常。我尝试过发布的决议，但无济于事。我不知道该怎么办。希望外面有人可以帮忙。提前致谢。

driver.findElement(By.linkText("Add")).click();
List <WebElement> groups = new Select(driver.findElement(By.xpath("/html/body/div[1]/section/div/article/form/fieldset/div[3]/div[2]/div/div/div[1]/select"))).getOptions();
groups.get(3).click();
JavascriptExecutor js = (JavascriptExecutor)driver;
WebElement groupRole = driver.findElement(By.xpath("/html/body/div[1]/section/div/article/form/fieldset/div[3]/div[2]/div/div/div[2]/label[2]"));
js.executeScript("arguments[0].click();", groupRole);
driver.findElement(By.xpath("/html/body/div[1]/section/div/article/form/fieldset/div[3]/div[2]/div/div/div[2]/label[2]")).sendKeys(" ");
// Check to see if the user should be made active and set active checkbox to on if value in file is "active"
if (activeFlag.equals("active"))
{
    driver.findElement(By.xpath("/html/body/div[1]/section/div/article/form/fieldset/div[3]/div[1]/div[1]/div/div/input")).sendKeys(" ");
} 
// If the user role is to be admin then set the Site role to Administrator
if (userLevel.equals("admin"))
{
    List <WebElement> roles = new Select(driver.findElement(By.name("community_role"))).getOptions();
    roles.get(1).click();
}

下面是堆栈跟踪：

 Exception in thread "main" org.openqa.selenium.WebDriverException: unknown error: cannot focus element
      (Session info: chrome=47.0.2526.106)
      (Driver info: chromedriver=2.20.353145 (343b531d31eeb933ec778dbcf7081628a1396067),platform=Windows NT 10.0 x86_64) (WARNING: The server did not provide any stacktrace information)
    Command duration or timeout: 81 milliseconds
    Build info: version: '2.48.2', revision: '41bccdd', time: '2015-10-09 19:59:12'
    System info: host: 'Janet-PC', ip: '192.168.56.1', os.name: 'Windows 8.1', os.arch: 'x86', os.version: '6.3', java.version: '1.7.0_80-ea'
    Session ID: 0a9dbd54a81a42a4178b25b95bb14f63
    Driver info: org.openqa.selenium.chrome.ChromeDriver
    Capabilities [{platform=WIN8_1, acceptSslCerts=true, javascriptEnabled=true, browserName=chrome, chrome={userDataDir=C:\Users\Janet\AppData\Local\Temp\scoped_dir7508_15608}, rotatable=false, locationContextEnabled=true, mobileEmulationEnabled=false, version=47.0.2526.106, takesHeapSnapshot=true, cssSelectorsEnabled=true, databaseEnabled=false, handlesAlerts=true, browserConnectionEnabled=false, webStorageEnabled=true, nativeEvents=true, hasTouchScreen=false, applicationCacheEnabled=false, takesScreenshot=true}]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)
        at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
        at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:647)
        at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:326)
        at org.openqa.selenium.remote.RemoteWebElement.sendKeys(RemoteWebElement.java:121)
        at Viddler_create_user.createUser.test(createUser.java:244)
        at Viddler_create_user.createUser.setUpBeforeClass(createUser.java:126)
        at Viddler_create_user.createUser.main(createUser.java:64)

下面是另一个堆栈跟踪。我实际上在尝试单击提交按钮而不是活动标志时收到错误。我已经完成了我将提供的操作步骤。

Exception in thread "main" org.openqa.selenium.WebDriverException: unknown error: cannot focus element
  (Session info: chrome=47.0.2526.106)
  (Driver info: chromedriver=2.20.353145 (343b531d31eeb933ec778dbcf7081628a1396067),platform=Windows NT 10.0 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 52 milliseconds
Build info: version: '2.48.2', revision: '41bccdd', time: '2015-10-09 19:59:12'
System info: host: 'Janet-PC', ip: '192.168.56.1', os.name: 'Windows 8.1', os.arch: 'x86', os.version: '6.3', java.version: '1.7.0_80-ea'
Session ID: f332b496aa54d581c764f7328e770e65
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities [{platform=WIN8_1, acceptSslCerts=true, javascriptEnabled=true, browserName=chrome, chrome={userDataDir=C:\Users\Janet\AppData\Local\Temp\scoped_dir2072_18936}, rotatable=false, locationContextEnabled=true, mobileEmulationEnabled=false, version=47.0.2526.106, takesHeapSnapshot=true, cssSelectorsEnabled=true, databaseEnabled=false, handlesAlerts=true, browserConnectionEnabled=false, webStorageEnabled=true, nativeEvents=true, hasTouchScreen=false, applicationCacheEnabled=false, takesScreenshot=true}]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:647)
    at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:326)
    at org.openqa.selenium.remote.RemoteWebElement.sendKeys(RemoteWebElement.java:121)
    at Viddler_create_user.createUser.test(createUser.java:244)
    at Viddler_create_user.createUser.setUpBeforeClass(createUser.java:126)
    at Viddler_create_user.createUser.main(createUser.java:64)

法典：

        Actions actions = new Actions(driver);
        actions.moveToElement(driver.findElement(By.xpath("/html/body/div[1]/section/div/article/form/input[2]")));
        actions.click();
//      actions.sendKeys(" ");
        actions.build().perform();