I get a can't call method protocol without a package or object reference in the below code. Can anyone see what I have to do to fix it? 
use LWP::Simple;

use CGI qw/:standard/;

print header, start_html();
use CGI::Carp qw(fatalsToBrowser);

my $use_stopwords = 0;

my @stopwords = qw(I a about an are as at be by com de en for from how
+ in is it la of on or that the this
                   to was what when where who will with und the www);

#$line =~ s/\bQ$_\E\b/ **** /gi for @badwords;
# james blunt you're beautiful

my $url = "http://www.w3schools.com/html/html_primary.asp";

#######################################
# Gather response and header codes
#######################################
my $response = head($url);
my $responseline = $response->protocol(); # immediate error is here
my $responsecode = $response->status_line();
my $header       = $response->headers_as_string();

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In reply to can't call method 'protocol' by Anonymous Monk

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