Nodejs 20.x is almost EOL. Starting with NodeBB 4.11.0 minimum nodejs version required will be nodejs 22.x
NodeBB v4.11.0 minimum NodeJS version
Submitted 2 months ago by 
baris@community.nodebb.org to nodebb-development@community.nodebb.org
https://community.nodebb.org/topic/19287/nodebb-v4.11.0-minimum-nodejs-version