title: Unfortunately, System UI has stopped. Is this an App error?
body: <p>When I try to clear apps (by using the home button), I face "Unfortunately, System UI has stopped" alertDialog.<br>
  Is this because of my app error (Not all the times, some times)? or its belongs to the Android system?</p>
  
  <p>If it is belongs to Application ERROR, How can I solve it?</p>
  
  <p><a href="https://i.stack.imgur.com/K3P0R.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/K3P0R.png" alt="enter image description here"></a></p>