System error

error:  Can't call method "prepare" on an undefined value at /home/mc2/public_html/umt/webgen/update_counter.html line 14.
context: 
... 
10: 
11:  if ($page_id =~ /\d{2,6}/) {
12: 
13:  #update viewed times
14:  my $sth = $dbh->prepare("UPDATE webpages SET hits=hits+1 WHERE pageid = ? ");
15:  $sth->execute($page_id) || die "can't execute sth : $!";
16: 
17: 
18:  my $sql = "SELECT hits FROM webpages WHERE pageid = ? ";
... 
code stack:  /home/mc2/public_html/umt/webgen/update_counter.html:14
raw error






























Can't call method "prepare" on an undefined value at /home/mc2/public_html/umt/webgen/update_counter.html line 14.


Trace begun at /usr/share/perl5/HTML/Mason/Exceptions.pm line 129
HTML::Mason::Exceptions::rethrow_exception('Can\'t call method "prepare" on an undefined value at /home/mc2/public_html/umt/webgen/update_counter.html line 14.^J') called at /home/mc2/public_html/umt/webgen/update_counter.html line 14
HTML::Mason::Commands::__ANON__('counter_format', 'white', 'page_id', 11921) called at /usr/share/perl5/HTML/Mason/Component.pm line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x1679340)', 'counter_format', 'white', 'page_id', 11921) called at /usr/share/perl5/HTML/Mason/Request.pm line 1257
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 1252
HTML::Mason::Request::comp(undef, undef, undef, 'counter_format', 'white', 'page_id', 11921) called at /usr/share/perl5/HTML/Mason/Request.pm line 466
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 466
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 418
HTML::Mason::Request::exec('MasonX::Request::WithApacheSession=HASH(0x166b0b0)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 165
HTML::Mason::Request::ApacheHandler::exec('MasonX::Request::WithApacheSession=HASH(0x166b0b0)') called at /usr/share/perl5/MasonX/Request/WithApacheSession.pm line 130
MasonX::Request::WithApacheSession::exec('MasonX::Request::WithApacheSession=HASH(0x166b0b0)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 832
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0xb9f130)', 'Apache=SCALAR(0x1615e10)') called at /etc/apache-perl/handler.pl line 93
HTML::Mason::handler('Apache=SCALAR(0x1615e10)') called at /dev/null line 0
eval {...} at /dev/null line 0