Runtime Error in component "EnsEMBL::Users::Component::Account::Register [content]"

Function EnsEMBL::Users::Component::Account::Register fails to execute due to the following error:

	Uncaught exception 'DOMException' with message 'Element with node name 'form-element-name' can not be created.'
	  Thrown by EnsEMBL::Web::DOM::create_element in module EnsEMBL::Web::Form::Field at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Form/Field.pm on line 148
	  Called by EnsEMBL::Web::Form::Field::add_element in module EnsEMBL::Web::Form::Field at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Form/Field.pm on line 88
	  Called by EnsEMBL::Web::Form::Field::configure in module EnsEMBL::Web::Form::Fieldset at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Form/Fieldset.pm on line 215
	  Called by EnsEMBL::Web::Form::Fieldset::add_field in module EnsEMBL::Web::Form at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Form.pm on line 232
	  Called by EnsEMBL::Web::Form::add_field in module EnsEMBL::Users::Component::Account at
	... /usr/local/ensembl-108/public-plugins/users/modules/EnsEMBL/Users/Component/Account.pm on line 125
	  Called by EnsEMBL::Users::Component::Account::add_user_details_fields in module
	... EnsEMBL::Users::Component::Account::Register at
	... /usr/local/ensembl-108/public-plugins/users/modules/EnsEMBL/Users/Component/Account/Register.pm on line 43
	  Called by EnsEMBL::Users::Component::Account::Register::content in module EnsEMBL::Web::Component at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Component.pm on line 268
	  Called by EnsEMBL::Web::Component::get_content in module EnsEMBL::Web::Document::Panel at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Document/Panel.pm on line 437
	  Called by (eval) in module EnsEMBL::Web::Document::Panel at
	... /usr/local/ensembl-108/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 at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Document/Panel.pm on line 330
	  Called by EnsEMBL::Web::Document::Panel::content in module EnsEMBL::Web::Document::Element::Content at
	... /usr/local/ensembl-108/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
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Controller.pm on line 468
	  Called by EnsEMBL::Web::Controller::render_page in module EnsEMBL::Web::Controller::Page at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Controller/Page.pm on line 81
	  Called by EnsEMBL::Web::Controller::Page::render_page in module EnsEMBL::Web::Controller::Modal at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Controller/Modal.pm on line 57
	  Called by EnsEMBL::Web::Controller::Modal::render_page in module EnsEMBL::Web::Controller::Modal at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Controller/Modal.pm on line 43
	  Called by EnsEMBL::Web::Controller::Modal::init in module EnsEMBL::Web::Controller at
	... /usr/local/ensembl-108/ensembl-webcode/modules/EnsEMBL/Web/Controller.pm on line 112
	  Called by EnsEMBL::Web::Controller::process in module EnsEMBL::Web::Apache::SpeciesHandler at
	... /usr/local/ensembl-108/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
	... /usr/local/ensembl-108/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