Warning: Undefined variable $elements in htools_field_formatter_third_party_settings_form

Warning: Undefined variable $elements in htools_field_formatter_third_party_settings_form() (line 234 of modules/contrib/htools/htools.module).
htools_field_formatter_third_party_settings_form(Object, Object, 'default', Array, Object) (Line: 176)
Drupal\field_ui\Form\EntityViewDisplayEditForm->Drupal\field_ui\Form\{closure}(Object, 'htools') (Line: 405)
Drupal\Core\Extension\ModuleHandler->invokeAllWith('field_formatter_third_party_settings_form', Object) (Line: 182)
Drupal\field_ui\Form\EntityViewDisplayEditForm->thirdPartySettingsForm(Object, Object, Array, Object) (Line: 447)
Drupal\field_ui\Form\EntityDisplayFormBase->buildFieldRow(Object, Array, Object) (Line: 40)
Drupal\field_ui\Form\EntityViewDisplayEditForm->buildFieldRow(Object, Array, Object) (Line: 225)
Drupal\layout_builder\Form\LayoutBuilderEntityViewDisplayForm->buildFieldRow(Object, Array, Object) (Line: 209)
Drupal\field_ui\Form\EntityDisplayFormBase->form(Array, Object) (Line: 47)
Drupal\layout_builder\Form\LayoutBuilderEntityViewDisplayForm->form(Array, Object) (Line: 26)
Drupal\layout_builder_overrides\Form\LayoutBuilderEntityViewDisplayForm->form(Array, Object) (Line: 106)
Drupal\Core\Entity\EntityForm->buildForm(Array, Object) (Line: 40)
Drupal\layout_builder\Form\LayoutBuilderEntityViewDisplayForm->buildForm(Array, Object, Object)
call_user_func_array(Array, Array) (Line: 536)
Drupal\Core\Form\FormBuilder->retrieveForm('entity_view_display_edit_form', Object) (Line: 283)
Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 97)
Drupal\autosave_form\Form\AutosaveFormBuilder->buildForm(Object, Object) (Line: 73)
Drupal\Core\Controller\FormController->getContentResult(Object, Object) (Line: 39)
Drupal\layout_builder\Controller\LayoutBuilderHtmlEntityFormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 580)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 169)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 81)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 68)
Drupal\simple_oauth\HttpMiddleware\BasicAuthSwap->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 718)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Simple patch attached initializing the variable elements