System error

error:  Can't call method "prepare" on an undefined value at /Programs/MathSciNet/Current/mason/msc/SearchMSCWebComp.mas line 180, <_GEN_1> line 212329.
context: 
... 
176: 
177:  ## Query used to fill select widget.
178:  my $majorSubCountQuery = "SELECT class_code,search_desc FROM classes c ".
179:  "WHERE lvl=1 $smsc->{sqlToggleDate} ORDER BY class_code;";
180:  my $majorSubResult = $dbh->prepare($majorSubCountQuery);
181:  if ($majorSubResult->execute()) {
182:  }
183: 
184:  if ($btn =~ m/Since 1999/i || ($ls =~ m/^S/ && $btn =~ m/Search/)) {
... 
code stack:  /Programs/MathSciNet/Current/mason/msc/SearchMSCWebComp.mas:180
/System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm:951
/dsk2/mason/var/mason/msc/obj/4024685923/SearchMSCWebComp.mas.obj:6
/Programs/MathSciNet/Current/mason/msc/Search2000.html:12
/Programs/MathSciNet/Current/mason/msc/tabHandler:26
/System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm:951
/dsk2/mason/var/mason/msc/obj/4024685923/tabHandler.obj:15
/Programs/MathSciNet/Current/mason/msc/tabHandler:19
/System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm:951
/dsk2/mason/var/mason/msc/obj/4024685923/tabHandler.obj:53
/Programs/MathSciNet/Current/mason/msc/autohandler:62
/System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm:951
/dsk2/mason/var/mason/msc/obj/4024685923/autohandler.obj:20
/Programs/MathSciNet/Current/mason/msc/syshandler:166
raw error






























Can't call method "prepare" on an undefined value at /Programs/MathSciNet/Current/mason/msc/SearchMSCWebComp.mas line 180, <_GEN_1> line 212329.


Trace begun at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Exceptions.pm line 129
HTML::Mason::Exceptions::rethrow_exception('Can\'t call method "prepare" on an undefined value at /Programs/MathSciNet/Current/mason/msc/SearchMSCWebComp.mas line 180, <_GEN_1> line 212329.^J') called at /Programs/MathSciNet/Current/mason/msc/SearchMSCWebComp.mas line 180
HTML::Mason::Commands::__ANON__('t', '62F03', 's', '', 'btn', '', 'tab', 1, 'link', 'msc.html', 'ls', '') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 160
HTML::Mason::Component::run_dynamic_sub('HTML::Mason::Component::FileBased=HASH(0xb6b0420)', 'main', 't', '62F03', 's', '', 'btn', '', 'tab', 1, 'link', 'msc.html', 'ls', '') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 951
HTML::Mason::Request::call_dynamic('HTML::Mason::Request::ApacheHandler=HASH(0xb1a8ca8)', 'main', 't', '62F03', 's', '', 'btn', '', 'tab', 1, 'link', 'msc.html', 'ls', '') called at /dsk2/mason/var/mason/msc/obj/4024685923/SearchMSCWebComp.mas.obj line 6
HTML::Mason::Commands::__ANON__('t', '62F03', 's', '', 'btn', '', 'tab', 1, 'link', 'msc.html', 'ls', '') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 138
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xb6b0420)', 't', '62F03', 's', '', 'btn', '', 'tab', 1, 'link', 'msc.html', 'ls', '') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1305
eval {...} at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1295
HTML::Mason::Request::comp(undef, undef, 't', '62F03', 's', '', 'btn', '', 'tab', 1, 'link', 'msc.html', 'ls', '') called at /Programs/MathSciNet/Current/mason/msc/Search2000.html line 12
HTML::Mason::Commands::__ANON__('link', 'msc.html', 'tab', 1, 'text', 'MSC2000 database', 'file', 'Search2000.html', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 138
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xb681a70)', 'link', 'msc.html', 'tab', 1, 'text', 'MSC2000 database', 'file', 'Search2000.html', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1305
eval {...} at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1295
HTML::Mason::Request::comp(undef, undef, 'link', 'msc.html', 'tab', 1, 'text', 'MSC2000 database', 'file', 'Search2000.html', 't', '62F03') called at /Programs/MathSciNet/Current/mason/msc/tabHandler line 26
HTML::Mason::Commands::__ANON__('link', 'msc.html', 'text', 'MSC2000 database', 'file', 'Search2000.html', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 160
HTML::Mason::Component::run_dynamic_sub('HTML::Mason::Component::FileBased=HASH(0xb3af720)', 'subcomponent_doFolder', 'link', 'msc.html', 'text', 'MSC2000 database', 'file', 'Search2000.html', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 951
HTML::Mason::Request::call_dynamic('HTML::Mason::Request::ApacheHandler=HASH(0xb1a8ca8)', 'subcomponent_doFolder', 'link', 'msc.html', 'text', 'MSC2000 database', 'file', 'Search2000.html', 't', '62F03') called at /dsk2/mason/var/mason/msc/obj/4024685923/tabHandler.obj line 15
HTML::Mason::Commands::__ANON__('link', 'msc.html', 'text', 'MSC2000 database', 'file', 'Search2000.html', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 138
HTML::Mason::Component::run('HTML::Mason::Component::Subcomponent=HASH(0xb5ba8e8)', 'link', 'msc.html', 'text', 'MSC2000 database', 'file', 'Search2000.html', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1305
eval {...} at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1295
HTML::Mason::Request::comp(undef, undef, 'link', 'msc.html', 'text', 'MSC2000 database', 'file', 'Search2000.html', 't', '62F03') called at /Programs/MathSciNet/Current/mason/msc/tabHandler line 19
HTML::Mason::Commands::__ANON__('t', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 160
HTML::Mason::Component::run_dynamic_sub('HTML::Mason::Component::FileBased=HASH(0xb3af720)', 'main', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 951
HTML::Mason::Request::call_dynamic('HTML::Mason::Request::ApacheHandler=HASH(0xb1a8ca8)', 'main', 't', '62F03') called at /dsk2/mason/var/mason/msc/obj/4024685923/tabHandler.obj line 53
HTML::Mason::Commands::__ANON__('t', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 138
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xb3af720)', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1305
eval {...} at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1295
HTML::Mason::Request::comp(undef, undef, undef, 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 958
HTML::Mason::Request::call_next('HTML::Mason::Request::ApacheHandler=HASH(0xb1a8ca8)') called at /Programs/MathSciNet/Current/mason/msc/autohandler line 62
HTML::Mason::Commands::__ANON__('t', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 160
HTML::Mason::Component::run_dynamic_sub('HTML::Mason::Component::FileBased=HASH(0xb581988)', 'main', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 951
HTML::Mason::Request::call_dynamic('HTML::Mason::Request::ApacheHandler=HASH(0xb1a8ca8)', 'main', 't', '62F03') called at /dsk2/mason/var/mason/msc/obj/4024685923/autohandler.obj line 20
HTML::Mason::Commands::__ANON__('t', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 138
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xb581988)', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1305
eval {...} at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1295
HTML::Mason::Request::comp(undef, undef, undef, 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 958
HTML::Mason::Request::call_next('HTML::Mason::Request::ApacheHandler=HASH(0xb1a8ca8)') called at /Programs/MathSciNet/Current/mason/msc/syshandler line 166
HTML::Mason::Commands::__ANON__('t', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Component.pm line 138
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xb567090)', 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1300
eval {...} at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 1295
HTML::Mason::Request::comp(undef, undef, undef, 't', '62F03') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 484
eval {...} at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 484
eval {...} at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/Request.pm line 436
HTML::Mason::Request::exec('HTML::Mason::Request::ApacheHandler=HASH(0xb1a8ca8)') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/ApacheHandler.pm line 168
HTML::Mason::Request::ApacheHandler::exec('HTML::Mason::Request::ApacheHandler=HASH(0xb1a8ca8)') called at /System/Links/Libraries/perl5/site_perl/5.12.1/HTML/Mason/ApacheHandler.pm line 825
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0xb3af580)', 'Apache2::RequestRec=SCALAR(0xb3aed78)') called at (eval 1007) line 8
HTML::Mason::ApacheHandler::handler('HTML::Mason::ApacheHandler', 'Apache2::RequestRec=SCALAR(0xb3aed78)') called at -e line 0
eval {...} at -e line 0