System error

Error during compilation of /var/www/html/dhandler:
Can't call method "prepare" on an undefined value at /var/www/html/dhandler line 30.

Stack:
  [/var/www/html/dhandler:30]
  [/usr/share/perl5/HTML/Mason/Interp.pm:817]
  [/usr/share/perl5/HTML/Mason/Interp.pm:445]
  [/usr/share/perl5/HTML/Mason/Interp.pm:773]
  [/usr/share/perl5/HTML/Mason/Request.pm:256]
  [/usr/share/perl5/HTML/Mason/Request.pm:212]
  [/usr/share/perl5/HTML/Mason/ApacheHandler.pm:94]
  [/usr/share/perl5/Class/Container.pm:275]
  [/usr/share/perl5/Class/Container.pm:353]
  [/usr/share/perl5/HTML/Mason/Interp.pm:348]
  [/usr/share/perl5/HTML/Mason/ApacheHandler.pm:874]
  [/usr/share/perl5/HTML/Mason/ApacheHandler.pm:828]
  [(eval 27):8]
  [/var/www/html/dhandler:0]



Trace begun at /usr/share/perl5/HTML/Mason/Interp.pm line 851
HTML::Mason::Interp::_compilation_error('HTML::Mason::Interp=HASH(0x7fd6e000ad00)', '/var/www/html/dhandler', 'HTML::Mason::Exception::Compilation=HASH(0x7fd6e0dbc720)') called at /usr/share/perl5/HTML/Mason/Interp.pm line 450
HTML::Mason::Interp::load('HTML::Mason::Interp=HASH(0x7fd6e000ad00)', '/dhandler') called at /usr/share/perl5/HTML/Mason/Interp.pm line 773
HTML::Mason::Interp::find_comp_upwards('HTML::Mason::Interp=HASH(0x7fd6e000ad00)', '/90428', 'dhandler') called at /usr/share/perl5/HTML/Mason/Request.pm line 256
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 232
HTML::Mason::Request::_initialize('HTML::Mason::Request::ApacheHandler=HASH(0x7fd6e0001d08)') called at /usr/share/perl5/HTML/Mason/Request.pm line 212
HTML::Mason::Request::new('HTML::Mason::Request::ApacheHandler', 'error_mode', 'output', 'error_format', 'html', 'interp', 'HTML::Mason::Interp=HASH(0x7fd6e000ad00)', 'comp', '/90428', 'args', 'ARRAY(0x7fd6e0ae3d70)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x7fd6e0ababe0)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x55d6282f2208)', 'container', 'HASH(0x7fd6e0ae35a8)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 94
HTML::Mason::Request::ApacheHandler::new('HTML::Mason::Request::ApacheHandler', 'error_mode', 'output', 'error_format', 'html', 'interp', 'HTML::Mason::Interp=HASH(0x7fd6e000ad00)', 'comp', '/90428', 'args', 'ARRAY(0x7fd6e0ae3d70)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x7fd6e0ababe0)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x55d6282f2208)', 'container', 'HASH(0x7fd6e0ae35a8)') called at /usr/share/perl5/Class/Container.pm line 275
Class::Container::call_method('HTML::Mason::Interp=HASH(0x7fd6e000ad00)', 'request', 'new', 'interp', 'HTML::Mason::Interp=HASH(0x7fd6e000ad00)', 'comp', '/90428', 'args', 'ARRAY(0x7fd6e0ae3d70)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x7fd6e0ababe0)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x55d6282f2208)', 'container', 'HASH(0x7fd6e0ae35a8)') called at /usr/share/perl5/Class/Container.pm line 353
Class::Container::create_delayed_object(undef, undef, 'interp', 'HTML::Mason::Interp=HASH(0x7fd6e000ad00)', 'comp', '/90428', 'args', 'ARRAY(0x7fd6e0ae3d70)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x7fd6e0ababe0)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x55d6282f2208)', 'container', 'HASH(0x7fd6e0ae35a8)') called at /usr/share/perl5/HTML/Mason/Interp.pm line 348
HTML::Mason::Interp::make_request('HTML::Mason::Interp=HASH(0x7fd6e000ad00)', 'comp', '/90428', 'args', 'ARRAY(0x7fd6e0ae3d70)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x7fd6e0ababe0)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x55d6282f2208)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 874
eval {...} at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 873
HTML::Mason::ApacheHandler::prepare_request('HTML::Mason::ApacheHandler=HASH(0x7fd6e0ababe0)', 'Apache2::RequestRec=SCALAR(0x55d6282f2208)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 828
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0x7fd6e0ababe0)', 'Apache2::RequestRec=SCALAR(0x55d6282f2208)') called at (eval 27) line 8
HTML::Mason::ApacheHandler::handler('HTML::Mason::ApacheHandler', 'Apache2::RequestRec=SCALAR(0x55d6282f2208)') called at -e line 0
eval {...} at -e line 0