use strict;
use warnings;
use CGI ();
use HTML::Entities ();

eval {
    # Do counting stuff and make sure it's not failing
    # and won't matter if it does.
};

my $output = $@ ?
    CGI::h3(HTML::Entities::encode_entities("I haz errerz: $@"))
    :
    "<!-- I haz a count -->";

print
    CGI::header(),
    CGI::start_html(),
    $output,
    CGI::end_html();