This is first time working with casino games using Goldsvet

When I try commands given in the script description such as:
pm2 start Arcade.js --watch pm2 start Server.js --watch pm2 start Slots.js --watch

I’m getting this error here.
[PM2][ERROR] Script not found: /home/ddd/public_html/PTWebSocket/start

Also in which folder we have to upload game files I have no idea.

Thanks for any help.