Error message

• Notice: Undefined index: #tag in Drupal\Core\Render\Element\HtmlTag::preRenderHtmlTag() (line 87 of core/lib/Drupal/Core/Render/Element/HtmlTag.php).

  Drupal\Core\Render\Element\HtmlTag::preRenderHtmlTag(Array)
  call_user_func_array(Array, Array) (Line: 100)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. Support for this callback implementation is deprecated in 8.8.0 and will be removed in Drupal 9.0.0. See https://www.drupal.org/node/2966725', 'silenced_deprecation', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 781)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 372)
  Drupal\Core\Render\Renderer->doRender(Array) (Line: 444)
  Drupal\Core\Render\Renderer->doRender(Array, 1) (Line: 200)
  Drupal\Core\Render\Renderer->render(Array, 1) (Line: 156)
  Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 573)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 157)
  Drupal\Core\Render\Renderer->renderPlain(Array) (Line: 349)
  Drupal\Core\Render\HtmlResponseAttachmentsProcessor->renderHtmlResponseAttachmentPlaceholders(Object, Array, Array) (Line: 206)
  Drupal\Core\Render\HtmlResponseAttachmentsProcessor->processAttachments(Object) (Line: 45)
  Drupal\Core\EventSubscriber\HtmlResponseSubscriber->onRespond(Object, 'kernel.response', Object)
  call_user_func(Array, Object, 'kernel.response', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.response', Object) (Line: 191)
  Symfony\Component\HttpKernel\HttpKernel->filterResponse(Object, Object, 1) (Line: 173)
  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: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 52)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
  Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 708)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Notice: Undefined index: #tag in Drupal\Core\Render\Element\HtmlTag::preRenderHtmlTag() (line 91 of core/lib/Drupal/Core/Render/Element/HtmlTag.php).

  Drupal\Core\Render\Element\HtmlTag::preRenderHtmlTag(Array)
  call_user_func_array(Array, Array) (Line: 100)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. Support for this callback implementation is deprecated in 8.8.0 and will be removed in Drupal 9.0.0. See https://www.drupal.org/node/2966725', 'silenced_deprecation', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 781)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 372)
  Drupal\Core\Render\Renderer->doRender(Array) (Line: 444)
  Drupal\Core\Render\Renderer->doRender(Array, 1) (Line: 200)
  Drupal\Core\Render\Renderer->render(Array, 1) (Line: 156)
  Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 573)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 157)
  Drupal\Core\Render\Renderer->renderPlain(Array) (Line: 349)
  Drupal\Core\Render\HtmlResponseAttachmentsProcessor->renderHtmlResponseAttachmentPlaceholders(Object, Array, Array) (Line: 206)
  Drupal\Core\Render\HtmlResponseAttachmentsProcessor->processAttachments(Object) (Line: 45)
  Drupal\Core\EventSubscriber\HtmlResponseSubscriber->onRespond(Object, 'kernel.response', Object)
  call_user_func(Array, Object, 'kernel.response', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.response', Object) (Line: 191)
  Symfony\Component\HttpKernel\HttpKernel->filterResponse(Object, Object, 1) (Line: 173)
  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: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 52)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
  Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 708)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)