Duke ... Thank you. This command solved the problem:
./nodebb reset -p nodebb-plugin-map
we want to develop discussion forum and nodebb is best option.
as we are startup we cant buy node bb licence.
can I use free version nodebb discussion forum on my production server after customization?
Modification and commercial use are allowed, as long as the other conditions of the license are followed.
thanks @yariplus . how to customize node bb source code totally?
@pawan-patil Can you explain what you mean by totally?
@pawan-patil You are able to modify the source code and use it on your own site. You are only limited if you are intending to redistribute the code. If you intend to, then you must also open-source your changed code.
If in doubt, you'll want to contact a lawyer to review the GPLv3 license that comes with NodeBB.