WHM/cPanel - csf Internal Server Error

While accessing csf through whm, you may get this error.

===============
Internal Server Error
500
No response from subprocess (/usr/local/cpanel/whostmgr/docroot/cgi/addon_csf.cgi): subprocess exited with status 2
cpsrvd/11.38.0.18 Server at xxx.xxx.xxx.xxx
================

Fix: Update the csf version using 
root@server [~]# curl -s configserver.com/free/csupdate | perl