Hi guys I need help from you facing 504 Gateway Time-out error while publishing the home page I can see this 504 error under network tab from the /bin/replicate.   

I am facing one issue in AEm 6.4 touch ui with event listener.When I open the page properties dialog and after configuring the field values I have to validate them if any field value is invalid I have to dispaly error message and not allow them to submit dialog before validating.I've to trigger thes...