Q: Dismiss modal dialogue

I have several MAC Servers running FileMaker all remote and unattended, all using El Capitan latest version. All running just fine.

On occasion a modal dialogue box will appear (Sample here) and prevent the server from executing further actions.

I would like to have a method of automatically dismissing these types of messages, Perhaps by a Cron script or other Unattended method. In the old days ≤ OS 9, I used an app called OKEY DOKEY to fill that function. But this is not available for OSX.

What would it take to detect and respond to these types of invasive dialogue boxes?

TIA

BM