Help me to fully run the bot

[SeMaKKa]

Hello. I have node bot like this which starts via directing to the file and then need to type node bot.js and it sends items from first bot to second and then vice versa but there are a lot of crashes which demolishes my brain. now I have found https://github.com/DoctorMcKay/node-steam-tradeoffer-manager but there is something different, how to run the bot, it seems this is for site but not really sure. can someone help me to configure and run step by step this bot correctly and inform how it works?
 

Regards.