Getting "org.openqa.selenium.ElementClickInterceptedException" when invoking a CLICK using Selenium Java Test case

Question

I am using the below java code with Katalon Selenium IDE.

import java.util.regex.Pattern;
import java.util.concurrent.TimeUnit;
import org.junit.*;
import static org.junit.Assert.*;
import static org.hamcrest.CoreMatchers.*;
import org.openqa.selenium.*;
import org.openqa.selenium.support.ui.Select;
import org.openqa.selenium.By; 
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.support.ui.*;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.htmlunit.HtmlUnitDriver;

  public static void setUp() throws Exception {
 System.setProperty("webdriver.chrome.driver", "C:\\Users\\myuser\\Downloads\\chromedriver_win32\\chromedriver.exe");
 driver = new ChromeDriver();
    driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);
  }


public static void testQScan() throws Exception {
    driver.get("https://qualysguard.myorg.com/fo/login.php?idm_key=saml2_78743hhh43");
    WebElement element = new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.xpath("//*[@id='userNameInput']")));
    System.out.println("Title of the page is 8 -> " + driver.getTitle());
    driver.findElement(By.linkText("Scans")).click();
    System.out.println("Title of the page is 9 -> " + driver.getTitle());
}

After launching the base URL it is supposed to click on the "Scans" TAB. This works fine and the "Scans" TAB gets clicked when played using Selenium/Katalon browser plugin IDE.

However, running the exported java code gives me the following error:

Output:

Title of the page is 8 -> Dashboard
Exception in thread "main" org.openqa.selenium.ElementClickInterceptedException: element click intercepted: Element <a onclick="javascript: showProcessing('...');" href="/fo/tools/module_landing.php?module=prod_scans" class="module-link">Scans</a> is not clickable at point (180, 100). Other element would receive the click: <div id="page-loading-mask" style="visibility: visible;">...</div>
  (Session info: chrome=77.0.3865.75)
Build info: version: '3.141.0', revision: '2ecb7d9a', time: '2018-10-31T20:09:30'
System info: host: 'AB-MYHOST7', ip: '10.9.9.112', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_121'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, browserName: chrome, browserVersion: 77.0.3865.75, chrome: {chromedriverVersion: 77.0.3865.40 (f484704e052e0..., userDataDir: C:\Users\myuser\AppData\Loc...}, goog:chromeOptions: {debuggerAddress: localhost:51849}, javascriptEnabled: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: XP, platformName: XP, proxy: Proxy(), setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify}
Session ID: 71b1daf7a06f6215547e7c79485c295e
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:187)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:122)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:285)
at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:84)
at pack.QScan.testQualysScan(QScan.java:139)
at pack.QScan.main(QScan.java:212)

Please provide suggestions on how I can overcome the error.

View Source on the browser for Scans Tab has the below entry:

<div class="clear"></div>
<div id="top_modules_bar">
  <div class="module-tabs-tab module-tabs-tab-selected">
    <a onclick="javascript: showProcessing('Dashboard');" href="/fo/compliance/index.php?skip=1" class="module-link">Dashboard</a>
  </div>
  <div class="module-tabs-tab">
    <a onclick="javascript: showProcessing('Policies');" href="/fo/tools/module_landing.php?module=prod_policies" class="module-link">Policies</a>
  </div>
  <div class="module-tabs-tab">
    <a onclick="javascript: showProcessing('Scans');" href="/fo/tools/module_landing.php?module=prod_scans" class="module-link">Scans</a>
  </div>
  <div class="module-tabs-tab">
    <a onclick="javascript: showProcessing('Reports');" href="/fo/tools/module_landing.php?module=prod_reports" class="module-link">Reports</a>
  </div>
  <div class="module-tabs-tab">
    <a onclick="javascript: showProcessing('Exceptions');" href="/fo/tools/module_landing.php?module=prod_exceptions" class="module-link">Exceptions</a>
  </div>
  <div class="module-tabs-tab">
    <a onclick="javascript: showProcessing('Assets');" href="/fo/tools/module_landing.php?module=prod_assets" class="module-link">Assets</a>
  </div>
  <div class="module-tabs-tab">
    <a onclick="javascript: showProcessing('Users');" href="/fo/tools/module_landing.php?module=prod_users" class="module-link">Users</a>
  </div>
  <div class="clear"></div>
</div>

Answer 1

Use Actions class or javascript executer:

Actions act =  new Actions(driver);
act.moveToElement(driver.findElement(By.linkText("Scans"))).click().perform();

OR

try {
     driver.findElement(By.linkText("Scans")).click();
  } catch (Exception e) {
     JavascriptExecutor executor = (JavascriptExecutor) driver;
     executor.executeScript("arguments[0].click();", driver.findElement(By.linkText("Scans")));
  }

Answer 2

To click on Scans Induce WebDriverWait and elementToBeClickable() and following Xpath option

new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.xpath("//div[@id='module-tabs-tab']//a[text()='Scans']"))).click();

Or use actions class to click.

WebElement scanEle =new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.xpath("//div[@id='module-tabs-tab']//a[text()='Scans']")));
Actions action =new Actions(driver);
action.moveToElement(scanEle).click().build().perform();