WebElement ul = driver.findElementByXPath(prop.getProperty("category"));
    List<WebElement> options = ul.findElements(By.tagName("li"));
    for(WebElement sample: options)
    {
        if(sample.getText().equals(data)){
            sample.click();
        }
    }

Exception in thread "main"
org.openqa.selenium.StaleElementReferenceException: stale element
reference: element is not attached to the page document