Trying to use Katalium Server but getting error and can't find guides

Hi, I’m trying to run my Katalon tests through the Katalium server as given by this link, but it seems as though this webpage is the only resource available and my server is stuck on step 3 of the guide essentially (running standalone batch file for windows results in thousands of lines of errors). I think the main issue is this

but I don’t know how to fix it. Can anyone help? Thanks