Using Drupal v8.4.2 and latest MDSlider. All caching is disabled. twig debugging is on

Installed slider per documentation,  added a field for the slider to Basic Page via: Home-> Administration-> Structure-> Content types-> Basic page. 

Field: MDSlider

Machine  name: field_mdslider‎. 

Field is set to be hidden.

I then created a new slider and added it to our home page: /node/1 using the 'MDSlider' pulldown selection to select the new slider I created. The slider looks and works great when we view the home page. 

The problem occurs when I add another basic page that will not use the slider. If the MDSlider pulldown selection is set to be: 'None' the following errors are generated on the page when it is viewed. 

• User error: "0" is an invalid render array key in Drupal\Core\Render\Element::children() (line 97 of core/lib/Drupal/Core/Render/Element.php).

  Drupal\Core\Render\Element::children(Array) (Line: 84)Drupal\Core\Field\FormatterBase->view(Object, 'en') (Line: 259)Drupal\Core\Entity\Entity\EntityViewDisplay->buildMultiple(Array) (Line: 320)Drupal\Core\Entity\EntityViewBuilder->buildComponents(Array, Array, Array, 'full') (Line: 24)Drupal\node\NodeViewBuilder->buildComponents(Array, Array, Array, 'full') (Line: 263)Drupal\Core\Entity\EntityViewBuilder->buildMultiple(Array) (Line: 220)Drupal\Core\Entity\EntityViewBuilder->build(Array)call_user_func(Array, Array) (Line: 378)Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)Drupal\Core\Render\Renderer->render(Array, ) (Line: 226)Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 576)Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 227)Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 117)Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object) (Line: 108)Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object) (Line: 158)Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 68)Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 99)Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 78)Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 50)Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 657)Drupal\Core\DrupalKernel->handle(Object) (Line: 19)    

• User error: "0" is an invalid render array key in Drupal\Core\Render\Element::children() (line 97 of core/lib/Drupal/Core/Render/Element.php).

  Drupal\Core\Render\Element::children(Array, 1) (Line: 408)Drupal\Core\Render\Renderer->doRender(Array) (Line: 450)Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)Drupal\Core\Render\Renderer->render(Array) (Line: 490)Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 114)__TwigTemplate_4ae59022820823361d314fdb0db03eda142ac3295eb1399a7323e963e3d3bf5a->doDisplay(Array, Array) (Line: 432)Twig_Template->displayWithErrorHandling(Array, Array) (Line: 403)Twig_Template->display(Array) (Line: 411)Twig_Template->render(Array) (Line: 64)twig_render_template('core/themes/bartik/templates/node.html.twig', Array) (Line: 384)Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 437)Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 195)Drupal\Core\Render\Renderer->render(Array, ) (Line: 226)Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 576)Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 227)Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 117)Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object) (Line: 108)Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object) (Line: 158)Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 68)Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 99)Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 78)Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 50)Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 657)Drupal\Core\DrupalKernel->handle(Object) (Line: 19)