Orange (data mining) psycopg2 connect fail "Unsupported frontend protocol" with postgresql 12.2

Question

https://orange.biolab.si/

Connect to postgresql 12.2 fails with:

Unsupported frontend protocol 123[wraps]

I believe this is:

https://github.com/petere/homebrew-postgresql/issues/51

I'm on Windows 18363.778 using Orange 3.25.0 and psycopg2-2.8.5.

Is there a fix/workaround for this? Kind of annoying. It's not easy finding a visualization tool that works with localhost postgresql.

Answer 1

Tomorrow's bug fix release (12.3) should contain a fix for this. (Although I thought this was only a problem on Macs, so maybe you are seeing a related but different problem)