NodeBB address in use, exiting... Error: listen EADDRINUSE 0.0.0.0:4567
This usually means that NodeBB is already running. Use ./nodebb stop and if you still have the issue look up "kill process on port" with a search engine.
This is my first day with NodeBB and I don't know how everything works.
Since the site is basically new, but testing different bits here and there, I was a little bit worried getting two times an error page with Excessive Load Warning. I have a VPS with one core and 2GB of RAM.