Communication between Iot2000 and PLC S7-1500

My bet is your PC had nodejs V12 or V14?

In a nutshell the latest FW on those IoT boxes is Nodejs8, this node requires Nodejs10+ - that IoT box (as i understand it) is obsolete & not being supported by siemens.

A £35 raspberry pi (or an industrialised one) is the answer.