npm install Error: EACCES: permission denied, access '/var/www/html'

I am trying to run npm install on production but it gives me an error

npm ERR! path /var/www/html
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access
npm ERR! Error: EACCES: permission denied, access '/var/www/html'
npm ERR!  { [Error: EACCES: permission denied, access '/var/www/html']
npm ERR!   stack: 'Error: EACCES: permission denied, access \'/var/www/html\'',
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'access',
npm ERR!   path: '/var/www/html' }
npm ERR! 
npm ERR! The operation was rejected by your operating system.
npm ERR! It is likely you do not have the permissions to access this file as the current user
npm ERR! 
npm ERR! If you believe this might be a permissions issue, please double-check the
npm ERR! permissions of the file and its containing directories, or try running
npm ERR! the command again as root/Administrator (though this is not recommended).

/var/www/html is my website directory in server.

I've tried this, still getting error.

Any thought?

via Chebli Mohamed