System error

error:  Can't call method "category" on an undefined value at /usr/local/tigger/apache2/htdocs.mfc2/food/dhandler line 52.
context: 
... 
48:  if ($parts[1] =~ m:,(\d+).html$:) {
49:  my $id = $1;
50:  my $obj = MFC::Food->lookup({ id => $id });
51:  my $desc;
52:  if ($obj->category) {
53:  $desc = $obj->category . ' -- ' . $obj->description;
54:  } else {
55:  $desc = $obj->description;
56:  }
... 
code stack:  /usr/local/tigger/apache2/htdocs.mfc2/food/dhandler:52
raw error






























Can't call method "category" on an undefined value at /usr/local/tigger/apache2/htdocs.mfc2/food/dhandler line 52.


Trace begun at /usr/local/lib/perl5/site_perl/5.28.3/HTML/Mason/Exceptions.pm line 125
HTML::Mason::Exceptions::rethrow_exception('Can\'t call method "category" on an undefined value at /usr/local/tigger/apache2/htdocs.mfc2/food/dhandler line 52.^J') called at /usr/local/tigger/apache2/htdocs.mfc2/food/dhandler line 52
HTML::Mason::Commands::__ANON__ at /usr/local/lib/perl5/site_perl/5.28.3/HTML/Mason/Component.pm line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x3682648)') called at /usr/local/lib/perl5/site_perl/5.28.3/HTML/Mason/Request.pm line 1300
eval {...} at /usr/local/lib/perl5/site_perl/5.28.3/HTML/Mason/Request.pm line 1292
HTML::Mason::Request::comp(undef, undef, undef) called at /usr/local/lib/perl5/site_perl/5.28.3/HTML/Mason/Request.pm line 481
eval {...} at /usr/local/lib/perl5/site_perl/5.28.3/HTML/Mason/Request.pm line 481
eval {...} at /usr/local/lib/perl5/site_perl/5.28.3/HTML/Mason/Request.pm line 433
HTML::Mason::Request::exec('HTML::Mason::Request::ApacheHandler=HASH(0x35223c0)') called at /usr/local/lib/perl5/site_perl/5.28.3/HTML/Mason/ApacheHandler.pm line 168
HTML::Mason::Request::ApacheHandler::exec('HTML::Mason::Request::ApacheHandler=HASH(0x35223c0)') called at /usr/local/lib/perl5/site_perl/5.28.3/HTML/Mason/ApacheHandler.pm line 825
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0x1682480)', 'Apache2::RequestRec=SCALAR(0x35224f8)') called at (eval 38) line 8
HTML::Mason::ApacheHandler::handler('HTML::Mason::ApacheHandler', 'Apache2::RequestRec=SCALAR(0x35224f8)') called at -e line 0
eval {...} at -e line 0