pgmodeler ?

I apologize, as this is a bit off topic for this list.

pgmodeler got mention in a thread that I started a day or two ago, and it looks
like it might be very useful

I am running on Ubuntu 18.04 (latest STABLE), and I found that there is a package,
which I downloaded. The idea is to import the project I am working on.

But, when I try to import it I get an error message about:

t says that the column pr.proisaag.

I don't want to spend a lot of time trying to get this package to work, if it is a
dead end. I am using Postgres 11 if that matters.

Has anyone gotten this to work If so, can anyone point me to a quick HOWTO to
import my existing project?

Thanks in advance.
--
"They that would give up essential liberty for temporary safety deserve
neither liberty nor safety."
-- Benjamin Franklin