Di you use sudo for any of the commands?
Yeah essentially you just set the correct url with your /forum path in config.json and set your reverse proxy to forward that path onto NodeBB:
@the-cat-gaming-099 In your NodeBB directory called config.json
This topic might be helpful for you:
I write a new topic ,and add tags ,the input field be missing,see the picture ,look out red line。
@pitaj thanks,that's useful.