AJAX error - Runtime Error in component "EnsEMBL::Web::Component::Gene::VariationTable [content]"

Function EnsEMBL::Web::Component::Gene::VariationTable fails to execute due to the following error:

	Uncaught exception 'DBException' with message 'Can't call method "get_TranscriptVariationAdaptor" on an
	... undefined value at /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/DBHub.pm
	... line 93.
	'
	  Thrown by EnsEMBL::Web::DBHub::get_adaptor in module EnsEMBL::Web::Component::VariationTable at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Component/VariationTable.pm
	... on line 891
	  Called by EnsEMBL::Web::Component::VariationTable::_count_transcript_variations in module
	... EnsEMBL::Web::Component::VariationTable at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Component/VariationTable.pm
	... on line 133
	  Called by EnsEMBL::Web::Component::VariationTable::content in module EnsEMBL::Web::Component at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Component.pm on line 268
	  Called by EnsEMBL::Web::Component::get_content in module EnsEMBL::Web::Document::Panel at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Document/Panel.pm on line 435
	  Called by (eval) in module EnsEMBL::Web::Document::Panel at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Document/Panel.pm on line 432
	  Called by EnsEMBL::Web::Document::Panel::component_content in module EnsEMBL::Web::Document::Panel::Ajax at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Document/Panel/Ajax.pm on
	... line 26
	  Called by EnsEMBL::Web::Document::Panel::Ajax::content in module EnsEMBL::Web::Document::Element::Content at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Document/Element/Content.pm
	... on line 142
	  Called by EnsEMBL::Web::Document::Element::Content::content in module EnsEMBL::Web::Controller at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Controller.pm on line 468
	  Called by EnsEMBL::Web::Controller::render_page in module EnsEMBL::Web::Controller::Component at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Controller/Component.pm on
	... line 62
	  Called by EnsEMBL::Web::Controller::Component::init in module EnsEMBL::Web::Controller at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Controller.pm on line 112
	  Called by EnsEMBL::Web::Controller::process in module EnsEMBL::Web::Apache::SpeciesHandler at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Apache/SpeciesHandler.pm on
	... line 103
	  Called by EnsEMBL::Web::Apache::SpeciesHandler::handler in module EnsEMBL::Web::Apache::Handlers at
	... /nfs/public/ro/ensweb/live/plants/www_113/ensembl-webcode/modules/EnsEMBL/Web/Apache/Handlers.pm on line
	... 531
	  Called by EnsEMBL::Web::Apache::Handlers::handler in module main at -e on line 0
	  Called by (eval) in module main at -e on line 0