Error including libraries: Can't locate /pub/home/ribca/mystery/cgi-bin/admin/db_utils.pl in @INC (@INC contains: /home/www/vhosts/ribca.net/mystery/cgi-bin /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at /home/www/vhosts/ribca.net/mystery/cgi-bin/add.cgi line 10.

Make sure they exist, permissions are set properly, and paths are set correctly.