错误：无法在phpunit测试中找到元素：* [name ='email']

I am working on an automated unit testing in PHP. I want to run a test on staging environment using PhpStorm and I am following this link: https://www.sitepoint.com/using-selenium-with-phpunit/. I have complete tasks up-to this code :

<?php

/**
 * Created by PhpStorm.
 * User: Developer4
 * Date: 11/2/2016
 * Time: 1:41 PM
 */
class uatTest extends PHPUnit_Extensions_Selenium2TestCase
{
    public function setUp()
    {

        $this->setHost('localhost');
        $this->setPort(4444);
//        $this->setBrowserUrl('http://localhost:8383/PHPUnit-and-Composer-Workflow/app/libraries/form.html');
        $this->setBrowserUrl('https://www.facebook.com/');

        $this->setBrowser('firefox');
    }
    public function tearDown()
    {
        $this->stop();
    }
    public function validInputsProvider()
    {
        $inputs[] = [
            [
                'email'              => 'user',
                'pass'              => 'pass'
            ]
        ];
        return $inputs;
    }
    public function testFormSubmissionWithUsername()
    {
        $this->byName('email')->value('user');
        $this->byId('loginbutton')->submit();
        $email = $this->byName('email');
        $this->assertEquals('user', $email->value());
    }
}

run selenium server with this command:

java -Dwebdriver.gecko.driver="C:\Users\Developer4\Downloads\geckodriver-v0.11.1-win32\geckodriver.exe" -jar C:\wamp\bin\php\php5.6.25\selenium-server-standalone-3.0.1.jar

test run screenshot:

errors are:

C:\wamp\bin\php\php5.6.25\php.exe C:/wamp/www/PHPUnit-and-Composer-Workflow/vendor/phpunit/phpunit/phpunit --no-configuration uatTest C:\wamp\www\PHPUnit-and-Composer-Workflow\test\uatTest.php --teamcity
Testing started at 8:47 PM ...
PHPUnit 5.6.2 by Sebastian Bergmann and contributors.


Unable to locate element: *[name='email']
For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
Build info: version: '3.0.1', revision: '1969d75', time: '2016-10-18 09:48:19 -0700'
System info: host: 'Developer4-PC', ip: '192.168.1.8', os.name: 'Windows 7', os.arch: 'x86', os.version: '6.1', java.version: '1.8.0_111'
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{rotatable=false, raisesAccessibilityExceptions=false, firefoxOptions={args=[], profile=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}, appBuildId=20161019084923, version=49.0.2, platform=XP, proxy={}, command_id=1, specificationLevel=0, acceptSslCerts=false, processId=7936, browserVersion=49.0.2, platformVersion=6.1, XULappId={ec8030f7-c20a-464f-9b0e-13a3a9e97384}, browserName=firefox, takesScreenshot=true, takesElementScreenshot=true, platformName=windows_nt, device=desktop}]
Session ID: 9b262c69-3ad2-44b2-8644-ac8e50e89262
*** Element info: {Using=name, value=email}
 C:\wamp\www\PHPUnit-and-Composer-Workflow\vendor\phpunit\phpunit-selenium\PHPUnit\Extensions\Selenium2TestCase\Driver.php:165
 C:\wamp\www\PHPUnit-and-Composer-Workflow\vendor\phpunit\phpunit-selenium\PHPUnit\Extensions\Selenium2TestCase\CommandsHolder.php:108
 C:\wamp\www\PHPUnit-and-Composer-Workflow\vendor\phpunit\phpunit-selenium\PHPUnit\Extensions\Selenium2TestCase\Element\Accessor.php:134
 C:\wamp\www\PHPUnit-and-Composer-Workflow\vendor\phpunit\phpunit-selenium\PHPUnit\Extensions\Selenium2TestCase\Element\Accessor.php:175
 C:\wamp\www\PHPUnit-and-Composer-Workflow\vendor\phpunit\phpunit-selenium\PHPUnit\Extensions\Selenium2TestCase\Element\Accessor.php:108
 C:\wamp\www\PHPUnit-and-Composer-Workflow\vendor\phpunit\phpunit-selenium\PHPUnit\Extensions\Selenium2TestCase.php:394
 C:\wamp\www\PHPUnit-and-Composer-Workflow\test\uatTest.php:37
 C:\wamp\www\PHPUnit-and-Composer-Workflow\test\uatTest.php:37
 C:\wamp\www\PHPUnit-and-Composer-Workflow\vendor\phpunit\phpunit-selenium\PHPUnit\Extensions\Selenium2TestCase.php:348
 C:\wamp\www\PHPUnit-and-Composer-Workflow\vendor\phpunit\phpunit-selenium\PHPUnit\Extensions\Selenium2TestCase.php:314



Time: 23.32 seconds, Memory: 3.75MB


ERRORS!
Tests: 1, Assertions: 0, Errors: 1.

Process finished with exit code 2