I think my postgres container can't accept remote connections

Has anybody out there ever have a message like this and if so how was it resolved?

sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) connection to server at “”, port 5432 failed: Connection refused
Is the server running on that host and accepting TCP/IP connections?

(Background on this error at: Error Messages — SQLAlchemy 1.4 Documentation)

Can you tell us more about how you run the container, on which operating system and when and where you see the error message?

One thing that I noticed: should be an IP address.