use lib qw(/path/to/the/cgi/bin/cgi-bin/usr/local /path/to/the/cgi/bin/cgi-bin/usr/local/lib/perl5 /path/to/the/cgi/bin/cgi-bin/usr/local/bin /path/to/the/cgi/bin/cgi-bin/usr/local/lib/perl5/site_perl /path/to/the/cgi/bin/cgi-bin/usr/local/bin /path/to/the/cgi/bin/cgi-bin/usr/local/lib/perl5/man /path/to/the/cgi/bin/cgi-bin/usr/local/lib/perl5/man/man3); use XML::Filter::ExceptionLocator; # <-- locally installed use HTTP::Request; # <-- locally installed (Invoking this module triggers the server error)