PostgreSQL related problem on iMac

Good morning Postgre,

I have a small notification pane which appears randomly, in the same =
position every time, towards the top of my iMac 27" (2009) screen in the =
midline.
It first occurred after the recent MacOS Sierra upgrade. The pane is on =
screen for less than a second each time, sometimes it is very brief, and =
is about whether to allow or deny Postgre to access incoming content (or =
something of the sort!). There is no knowing when it will appear. I have =
actually succeeded in clicking on it a couple of times but it still =
comes back - randomly throughout every computer session. If I am typing =
when it appears it can induce typing errors.
'Apple help=E2=80=99 did not know about this issue. They advised a scan =
with malwarebytes but this did not help.
I uninstalled Postgre from the iMac as I could not see that I would have =
a use for it but that did not help either.

I would very much like to be rid of this problem.

With thanks,

Neil Marshall=