Not able to solve "Stale element reference exception" in loop

Question

I am trying to click on pagination inside loop.

Here is my code:

WebElement pagination = d.findElement(By.xpath("/html/body/div[9]/div[1]/div[3]/div/div/div[2]/ul"));
List < WebElement > allPaginations = pagination.findElements(By.tagName("a"));
WebElement title = d.findElement(By.linkText(">"));
System.out.println(allPaginations.size());
if (allPaginations.size() > 0)
{
    System.out.println("Pagination exists");
    for (int i = 0; i < allPaginations.size(); i++)
    {
        allPaginations = pagination.findElements(By.tagName("a"));
        Thread.sleep(3000);
        allPaginations.get(i).click();
        d.manage().timeouts().pageLoadTimeout(5, TimeUnit.SECONDS);
        List < WebElement > ngo_Names = d.findElements(By.xpath("/html/body/div[9]/div[1]/div[3]/div/div/div[2]/table/tbody/tr/td[2]"));
        System.out.println(ngo_Names.size());
        //System.out.println(i);
    }
}
else
{
    System.out.println("Pagination doesn't exists");
}

But while trying clicking for second time, I'm getting exception which I'm not able to fix. Any suggestions on how to solve this. Thanks in advance

Edit:1

Here is the which exception I'm getting:

Exception in thread "main" org.openqa.selenium.StaleElementReferenceException: The element reference of <ul class="pagination"> stale; either the element is no longer attached to the DOM, it is not in the current frame context, or the document has been refreshed
For documentation on this error, please visit: http://seleniumhq.org/exceptions/stale_element_reference.html
Build info: version: '3.5.2', revision: '10229a9020', time: '2017-08-21T17:54:21.164Z'
System info: host: 'SAURABH', ip: '192.168.0.205', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_151'
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{moz:profile=C:\Users\Saurabh\AppData\Local\Temp\rust_mozprofile.m5FGXXXy6WIb, rotatable=false, timeouts={implicit=0, pageLoad=300000, script=30000}, pageLoadStrategy=normal, moz:headless=false, platform=ANY, moz:accessibilityChecks=false, acceptInsecureCerts=false, browserVersion=57.0.4, platformVersion=10.0, moz:processID=4752, browserName=firefox, javascriptEnabled=true, platformName=windows_nt, moz:webdriverClick=false}]
Session ID: d3be2955-cc46-4884-aff2-b54ca73ccc37
*** Element info: {Using=tag name, value=a}
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.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:185)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:120)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:164)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:82)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:641)
at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:275)
at org.openqa.selenium.remote.RemoteWebElement.findElements(RemoteWebElement.java:194)
at org.openqa.selenium.remote.RemoteWebElement.findElementsByTagName(RemoteWebElement.java:271)
at org.openqa.selenium.By$ByTagName.findElements(By.java:327)
at org.openqa.selenium.remote.RemoteWebElement.findElements(RemoteWebElement.java:170)
at ngpdarpan.Pagination.DataPull(Pagination.java:74)
at ngpdarpan.Pagination.main(Pagination.java:35)

Possible duplicate of Getting StaleElementReferenceException while trying print the link names — undetected Selenium
– undetected Selenium, Commented Jan 20, 2018 at 11:40

Buaban · Accepted Answer · 2018-01-19 07:16:21Z

The error shows that pagination was not in the DOM anymore. The solution is very simple, you just need to find it again in the loop.

WebElement pagination = d.findElement(By.xpath("/html/body/div[9]/div[1]/div[3]/div/div/div[2]/ul"));
List < WebElement > allPaginations = pagination.findElements(By.tagName("a"));
WebElement title = d.findElement(By.linkText(">"));
System.out.println(allPaginations.size());
if (allPaginations.size() > 0)
{
    System.out.println("Pagination exists");
    for (int i = 0; i < allPaginations.size(); i++)
    {
        pagination = d.findElement(By.xpath("/html/body/div[9]/div[1]/div[3]/div/div/div[2]/ul"));
        allPaginations = pagination.findElements(By.tagName("a"));
        Thread.sleep(3000);
        allPaginations.get(i).click();
        d.manage().timeouts().pageLoadTimeout(5, TimeUnit.SECONDS);
        List < WebElement > ngo_Names = d.findElements(By.xpath("/html/body/div[9]/div[1]/div[3]/div/div/div[2]/table/tbody/tr/td[2]"));
        System.out.println(ngo_Names.size());
        //System.out.println(i);
    }
}
else
{
    System.out.println("Pagination doesn't exists");
}

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