@a_5mith said:

https://docs.nodebb.org/en/latest/installing/os/ubuntu.html

./nodebb setup - the same does not help

Nodebb install the server digitalotsean on this guide

node app --setup
info: NodeBB v0.4.3 Copyright (C) 2013-2014 NodeBB Inc.
info: This program comes with ABSOLUTELY NO WARRANTY.
info: This is free software, and you are welcome to redistribute it under certain conditions.
info:
info: NodeBB Setup Triggered via Command Line
info: Database type not set! Run node app --setup

please help me!