var node path = process.env ['NODE_PATH']
I could be wrong, but to me... this would suggest that NodeJS is not installed or properly configured on your CentOS server. Have you installed all the prerequisites required to run NodeBB? e.g. "yum -y install nodejs git redis ImageMagick npm"
I will say one thing it sounds like the yum install for nodejs, could be the problem as I had to install mine manually using the NodeJS guide it self. Though if you can do it via NVM, I would suggest that being a better route in the long run, as the yum install version is a older version of nodejs and will give grief later on.
Hope that helps.
If your using WHM\cPanel ... check out my guide on how to get it running without the port number.