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TypeError: strtolower(): Argument #1 ($string) must be of type string, array given in strtolower() (line 174 of themes/custom/nttdata_theme/nttdata_theme.theme).
strtolower() (Line: 174)
nttdata_theme_preprocess_views_view()
call_user_func_array() (Line: 287)
Drupal\Core\Theme\ThemeManager->render() (Line: 422)
Drupal\Core\Render\Renderer->doRender() (Line: 435)
Drupal\Core\Render\Renderer->doRender() (Line: 201)
Drupal\Core\Render\Renderer->render() (Line: 479)
Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 169)
__TwigTemplate_bdd0e66ccee255213a425954c1234fc27655c21b1851125febe50182df04a25b->block_content() (Line: 182)
Twig\Template->displayBlock() (Line: 100)
__TwigTemplate_bdd0e66ccee255213a425954c1234fc27655c21b1851125febe50182df04a25b->doDisplay() (Line: 405)
Twig\Template->displayWithErrorHandling() (Line: 378)
Twig\Template->display() (Line: 390)
Twig\Template->render() (Line: 55)
twig_render_template() (Line: 384)
Drupal\Core\Theme\ThemeManager->render() (Line: 422)
Drupal\Core\Render\Renderer->doRender() (Line: 201)
Drupal\Core\Render\Renderer->render() (Line: 479)
Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 84)
__TwigTemplate_0d4a74e4a90622f163bde7786bde70ca4f3b79db1d025ecec8fb9dbe01916e67->doDisplay() (Line: 405)
Twig\Template->displayWithErrorHandling() (Line: 378)
Twig\Template->display() (Line: 390)
Twig\Template->render() (Line: 55)
twig_render_template() (Line: 384)
Drupal\Core\Theme\ThemeManager->render() (Line: 422)
Drupal\Core\Render\Renderer->doRender() (Line: 201)
Drupal\Core\Render\Renderer->render() (Line: 162)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 564)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 163)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
call_user_func() (Line: 142)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 174)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 81)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 58)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 270)
Drupal\shield\ShieldMiddleware->bypass() (Line: 137)
Drupal\shield\ShieldMiddleware->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 23)
Stack\StackedHttpKernel->handle() (Line: 709)
Drupal\Core\DrupalKernel->handle() (Line: 19)