Runtime Error in component "EnsEMBL::Web::Component::Help::Apology [content]"

Function EnsEMBL::Web::Component::Help::Apology fails to execute due to the following error:

	Can't use an undefined value as an ARRAY reference at
	... /ensemblweb/vega_archive/vega_68/sanger-plugins/vega/modules/EnsEMBL/Web/Component/Help/Apology.pm line 43.