Perl module installed but not listed in WHM

We're having an issue with password validation in email account. Based on error_log (/usr/local/cpanel/logs/error_log), we found error like this: [QUOTE]Can't locate Crypt/Cracklib.pm in @INC (you may need to install the Crypt::Cracklib module) (@INC contains: /usr/local/cpanel /usr/local/cpanel/3rdparty/perl/536/cpanel-lib/x86_64-linux /usr/local/cpanel/3rdparty/perl/536/cpanel-lib /usr/local/cpanel/3rdparty/perl/536/lib/x86_64-linux /usr/local/cpanel/3rdparty/perl/536/lib /opt/cpanel/perl5/536/site_lib/x86_64-linux /opt/cpanel/perl5/536/site_lib) at /usr/local/cpanel/Cpanel/PasswdStrength/Check.pm line 104.
That error appear on log file when we change the input password. We tried to install the module via WHM Perl Module installer and cpan, but it said that the module are already on newest version. Here is the output of perl -e 'print join("\n", @INC);' [QUOTE] /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5
We also attached image when submit button was clicked. We tried to restart cpanel service and disabled cageFS, but still doesn't work