Error including libraries: Can't locate /home/aircoonet/public_html/cgi-bin/links/admin/db_utils.pl in @INC (@INC contains: /websites/123reg/LinuxPackage24/ai/r_/co/air-cooled.net/public_html/cgi-bin/links /usr/local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5 /usr/share/perl5 .) at /websites/123reg/LinuxPackage24/ai/r_/co/air-cooled.net/public_html/cgi-bin/links/add.cgi line 31.

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