System error

error:  Can't locate object method "header_in" via package "Apache2::RequestRec" at /webroot/malcolmmason/midicanal.co.uk/riveryacht/contact.html line 29.
context: 
... 
25:  % if ($r->method eq 'POST') {
26:  <h2>More details please</h2>
27:  <p>Please complete the &#34;Name&#34; &#38; &#34;Email&#34; fields,<br />without this information we can&#39;t reply to you!</p>
28:  % } else {
29:  % $referer = $r->header_in("Referer") if $r->header_in("Referer");
30:  % }
31:  <form method="post" enctype="multipart/form-data" action="">
32:  <input type="hidden" name="referer" value="<% $referer %>" />
33:  <div class="boxwide">
... 
code stack:  /webroot/malcolmmason/midicanal.co.uk/riveryacht/contact.html:29
/webroot/malcolmmason/midicanal.co.uk/riveryacht/menu.mas:54
/webroot/malcolmmason/midicanal.co.uk/riveryacht/autohandler:38
raw error






























Can't locate object method "header_in" via package "Apache2::RequestRec" at /webroot/malcolmmason/midicanal.co.uk/riveryacht/contact.html line 29.


Trace begun at /usr/share/perl5/HTML/Mason/Exceptions.pm line 129
HTML::Mason::Exceptions::rethrow_exception('Can\'t locate object method "header_in" via package "Apache2::RequestRec" at /webroot/malcolmmason/midicanal.co.uk/riveryacht/contact.html line 29.^J') called at /webroot/malcolmmason/midicanal.co.uk/riveryacht/contact.html line 29
HTML::Mason::Commands::__ANON__ at /usr/share/perl5/HTML/Mason/Component.pm line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xa98a500)') called at /usr/share/perl5/HTML/Mason/Request.pm line 1278
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 1268
HTML::Mason::Request::comp(undef, undef, undef) called at /usr/share/perl5/HTML/Mason/Request.pm line 937
HTML::Mason::Request::call_next('HTML::Mason::Request::ApacheHandler=HASH(0xa981ee8)') called at /webroot/malcolmmason/midicanal.co.uk/riveryacht/menu.mas line 54
HTML::Mason::Commands::__ANON__ at /usr/share/perl5/HTML/Mason/Component.pm line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xa980040)') called at /usr/share/perl5/HTML/Mason/Request.pm line 1278
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 1268
HTML::Mason::Request::comp(undef, undef, undef) called at /usr/share/perl5/HTML/Mason/Request.pm line 937
HTML::Mason::Request::call_next('HTML::Mason::Request::ApacheHandler=HASH(0xa981ee8)') called at /webroot/malcolmmason/midicanal.co.uk/riveryacht/autohandler line 38
HTML::Mason::Commands::__ANON__ at /usr/share/perl5/HTML/Mason/Component.pm line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xa99cfe0)') called at /usr/share/perl5/HTML/Mason/Request.pm line 1276
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 1268
HTML::Mason::Request::comp(undef, undef, undef) called at /usr/share/perl5/HTML/Mason/Request.pm line 467
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 467
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 419
HTML::Mason::Request::exec('HTML::Mason::Request::ApacheHandler=HASH(0xa981ee8)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 165
HTML::Mason::Request::ApacheHandler::exec('HTML::Mason::Request::ApacheHandler=HASH(0xa981ee8)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 831
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0xa930138)', 'Apache2::RequestRec=SCALAR(0xa0bce60)') called at (eval 795) line 8
HTML::Mason::ApacheHandler::handler('HTML::Mason::ApacheHandler', 'Apache2::RequestRec=SCALAR(0xa0bce60)') called at -e line 0
eval {...} at -e line 0