title: Modal dialog popup will raise when i click on button , the popup contain only Ok button.
body: <p>Modal dialog popup will raise when i click on button , the popup contain only Ok button. I should close the popup by click on ok button . </p>
  
  <p>Exception coming : Exception in thread "main" org.openqa.selenium.UnhandledAlertException: Modal dialog present: First Name should not be blank</p>