It crashed nothing @Syed_Umar. The root cause may come from network connection, app loading, etc... Whatever and the actions couldn't find the elements to interact with.
Did you try to wait the element like:
WebDriverWait wait = new WebDriverWait(webDriver, timeoutInSeconds);
wait.until(ExpectedConditions.visibilityOfElementLocated(By.id));
or
wait.until(ExpectedConditions.elementToBeClickable(By.id));
Refer: http://www.seleniumhq.org/docs/04_webdriver_advanced.jsp
You can search around to apply exactly. Hopefully it helps.