If you receive the following errors while trying to install a Perl Module through the WHM > Install a Perl Module options :
spawn /scripts/perlinstaller CGI::Application:: Plus
Testing connection speed...(this could take a while)....Done
Ran out of working CPAN mirrors. Please contact cPanel Support at /scripts/cPanelPerl.pm line 209.
Login as root to the shell and initiate the following commands and try again to install the Perl module in WHM , it should be working now :
rm -f /root/.cpcpan/mirrors.speeds
rm -f /root/.cpcpan/pingtimes/*
This will clear out the cpanel previously downloaded mirrors of the available CPAN website and download a new mirrors.