Sending input signal to Acqknowledge

OS: Win7 64-bit
PsychoPy version: 2021.2.3
port: analog DSUB 37-pin parallel port
What are you trying to achieve?: Send an input signal to Acknowledge to mark when a stimulus begins.
Error: “NoneType” for the p_port in builder.

Before beginning I must say that I am computer illiterate, which makes it difficult to ask the right sort of question. That said, I hope that by outlining where I am at, somebody might have a clue as to what’s going on.
The Biopac/Acqknowledge setup is inherited, so there’s little knowledge as to how it was set up. Computer1 runs the experiment, and has a 37-pin ribbon running to Biopac, which then connects to Computer2/Acqknowledge via ethernet for data collection. Any thoughts on where to begin? Haven’t been able to make headway looking through the documentation, unfortunately, and will try and provide the best info I can if anybody knows what’s going on.

(edit: formatting)