This is fixed by adding below code -
import java.awt.Robot as Robot
import java.awt.event.KeyEvent as KeyEvent
def t1 = new Thread((({
for (i = 0; i < 10; i++) {
Robot robot = new Robot()
Thread.sleep(5000)
robot.keyPress(KeyEvent.VK_ENTER)
Thread.sleep(1000)
break
}
}) as Runnable))
and add below code just before the action where popup displays
t1.start()