System error

error:  Can't call method "param" on an undefined value at /var/www/obvius/perl/Obvius.pm line 1710.
context: 
... 
1706:  my ($this, $doc) = @_;
1707: 
1708:  $this->tracer($doc) if ($this->{DEBUG});
1709: 
1710:  return $doc->param('docparams') if (defined $doc->param('docparams'));
1711: 
1712:  my $docparams = $this->get_docparams_by(docid => $doc->Id);
1713: 
1714:  $doc->param(docparams => $docparams);
... 
code stack:  /var/www/obvius/perl/Obvius.pm:1710
/var/www/obvius/perl/Obvius.pm:1776
/var/www/www.ku.dk/perl/KU/MasonUtils.pm:710
/var/www/www.ku.dk/docs/system/valid_search_engines.js:9
raw error






























Can't call method "param" on an undefined value at /var/www/obvius/perl/Obvius.pm line 1710.


Trace begun at /usr/share/perl5/HTML/Mason/Exceptions.pm line 125
HTML::Mason::Exceptions::rethrow_exception('Can\'t call method "param" on an undefined value at /var/www/obvius/perl/Obvius.pm line 1710.^J') called at /var/www/obvius/perl/Obvius.pm line 1710
Obvius::get_docparams('Obvius=HASH(0x558d4d536208)', undef) called at /var/www/obvius/perl/Obvius.pm line 1776
Obvius::get_docparams_recursive('Obvius=HASH(0x558d4d536208)', undef) called at /var/www/www.ku.dk/perl/KU/MasonUtils.pm line 710
KU::MasonUtils::get_config_for_doc('Obvius=HASH(0x558d4d536208)', undef) called at /var/www/www.ku.dk/docs/system/valid_search_engines.js line 9
HTML::Mason::Commands::__ANON__('lang', 'da') called at /usr/share/perl5/HTML/Mason/Component.pm line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x558d4d53c238)', 'lang', 'da') called at /usr/share/perl5/HTML/Mason/Request.pm line 1300
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 1292
HTML::Mason::Request::comp(undef, undef, undef, 'lang', 'da') called at /usr/share/perl5/HTML/Mason/Request.pm line 481
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 481
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 433
HTML::Mason::Request::exec('HTML::Mason::Request::ApacheHandler=HASH(0x558d4d549ba8)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 165
HTML::Mason::Request::ApacheHandler::exec('HTML::Mason::Request::ApacheHandler=HASH(0x558d4d549ba8)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 831
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0x558d4d549f68)', 'Apache2::RequestRec=SCALAR(0x558d4ccf9e98)') called at (eval 388) line 8
HTML::Mason::ApacheHandler::handler('HTML::Mason::ApacheHandler', 'Apache2::RequestRec=SCALAR(0x558d4ccf9e98)') called at -e line 0
eval {...} at -e line 0