@Chong Hey I got it solved.
I changed the port to 4568 instead of 12001 and everything works well. It seems Ubuntu deals with these ports differently.
I just finished installed nodebb with mongodb and noticed no default username and password for admin. How do I create one?
What version of MongoDB is installed?
Admin credentials are created as a part of the NodeBB setup process
I re-ran ./nodebb setup and it worked. Thank you!
@Syleron, good to hear. Happy to have helped!