Error message
Warning: Attempt to read property "childNodes" on null in Drupal\iframe_filter\Plugin\Filter\IframeFilter->process() (line 126 of modules/custom/iframe_filter/src/Plugin/Filter/IframeFilter.php).
Drupal\iframe_filter\Plugin\Filter\IframeFilter->process() (Line: 123) Drupal\filter\Element\ProcessedText::preRenderText() call_user_func_array() (Line: 113) Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 886) Drupal\Core\Render\Renderer->doCallback() (Line: 431) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 484) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 93) __TwigTemplate_404644e2bac76466718f6388e6294bb8->doDisplay() (Line: 388) Twig\Template->yield() (Line: 51) __TwigTemplate_02469f1022ddb1b062005a9f5033a2b4->doDisplay() (Line: 388) Twig\Template->yield() (Line: 48) __TwigTemplate_40880f1e53d6a86ec4c213b848a85a01->doDisplay() (Line: 388) Twig\Template->yield() (Line: 344) Twig\Template->display() (Line: 359) Twig\Template->render() (Line: 51) Twig\TemplateWrapper->render() (Line: 33) twig_render_template() (Line: 348) Drupal\Core\Theme\ThemeManager->render() (Line: 490) Drupal\Core\Render\Renderer->doRender() (Line: 503) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 484) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 86) __TwigTemplate_eb7d5a835a3b1bb57d435ea44a856a4a->block_content() (Line: 432) Twig\Template->yieldBlock() (Line: 69) __TwigTemplate_eb7d5a835a3b1bb57d435ea44a856a4a->doDisplay() (Line: 388) Twig\Template->yield() (Line: 344) Twig\Template->display() (Line: 359) Twig\Template->render() (Line: 51) Twig\TemplateWrapper->render() (Line: 33) twig_render_template() (Line: 348) Drupal\Core\Theme\ThemeManager->render() (Line: 490) Drupal\Core\Render\Renderer->doRender() (Line: 503) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 484) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 445) __TwigTemplate_23be1cca6954f7ee1338aae38edef295->doDisplay() (Line: 388) Twig\Template->yield() (Line: 344) Twig\Template->display() (Line: 359) Twig\Template->render() (Line: 51) Twig\TemplateWrapper->render() (Line: 33) twig_render_template() (Line: 348) Drupal\Core\Theme\ThemeManager->render() (Line: 490) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 484) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 166) __TwigTemplate_77bc3756714ea55123016a12504dce4b->doDisplay() (Line: 388) Twig\Template->yield() (Line: 344) Twig\Template->display() (Line: 359) Twig\Template->render() (Line: 51) Twig\TemplateWrapper->render() (Line: 33) twig_render_template() (Line: 348) Drupal\Core\Theme\ThemeManager->render() (Line: 490) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 158) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 637) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 153) Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90) Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray() call_user_func() (Line: 111) Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186) Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76) Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53) Drupal\Core\StackMiddleware\Session->handle() (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28) Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 201) Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138) Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87) Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 50) Drupal\ban\BanMiddleware->handle() (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36) Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741) Drupal\Core\DrupalKernel->handle() (Line: 19)Warning: foreach() argument must be of type array|object, null given in Drupal\iframe_filter\Plugin\Filter\IframeFilter->process() (line 126 of modules/custom/iframe_filter/src/Plugin/Filter/IframeFilter.php).
Drupal\iframe_filter\Plugin\Filter\IframeFilter->process() (Line: 123) Drupal\filter\Element\ProcessedText::preRenderText() call_user_func_array() (Line: 113) Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 886) Drupal\Core\Render\Renderer->doCallback() (Line: 431) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 484) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 93) __TwigTemplate_404644e2bac76466718f6388e6294bb8->doDisplay() (Line: 388) Twig\Template->yield() (Line: 51) __TwigTemplate_02469f1022ddb1b062005a9f5033a2b4->doDisplay() (Line: 388) Twig\Template->yield() (Line: 48) __TwigTemplate_40880f1e53d6a86ec4c213b848a85a01->doDisplay() (Line: 388) Twig\Template->yield() (Line: 344) Twig\Template->display() (Line: 359) Twig\Template->render() (Line: 51) Twig\TemplateWrapper->render() (Line: 33) twig_render_template() (Line: 348) Drupal\Core\Theme\ThemeManager->render() (Line: 490) Drupal\Core\Render\Renderer->doRender() (Line: 503) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 484) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 86) __TwigTemplate_eb7d5a835a3b1bb57d435ea44a856a4a->block_content() (Line: 432) Twig\Template->yieldBlock() (Line: 69) __TwigTemplate_eb7d5a835a3b1bb57d435ea44a856a4a->doDisplay() (Line: 388) Twig\Template->yield() (Line: 344) Twig\Template->display() (Line: 359) Twig\Template->render() (Line: 51) Twig\TemplateWrapper->render() (Line: 33) twig_render_template() (Line: 348) Drupal\Core\Theme\ThemeManager->render() (Line: 490) Drupal\Core\Render\Renderer->doRender() (Line: 503) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 484) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 445) __TwigTemplate_23be1cca6954f7ee1338aae38edef295->doDisplay() (Line: 388) Twig\Template->yield() (Line: 344) Twig\Template->display() (Line: 359) Twig\Template->render() (Line: 51) Twig\TemplateWrapper->render() (Line: 33) twig_render_template() (Line: 348) Drupal\Core\Theme\ThemeManager->render() (Line: 490) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 484) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 166) __TwigTemplate_77bc3756714ea55123016a12504dce4b->doDisplay() (Line: 388) Twig\Template->yield() (Line: 344) Twig\Template->display() (Line: 359) Twig\Template->render() (Line: 51) Twig\TemplateWrapper->render() (Line: 33) twig_render_template() (Line: 348) Drupal\Core\Theme\ThemeManager->render() (Line: 490) Drupal\Core\Render\Renderer->doRender() (Line: 248) Drupal\Core\Render\Renderer->render() (Line: 158) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 637) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 153) Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90) Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray() call_user_func() (Line: 111) Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 186) Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76) Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53) Drupal\Core\StackMiddleware\Session->handle() (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28) Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 201) Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138) Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87) Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 50) Drupal\ban\BanMiddleware->handle() (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36) Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741) Drupal\Core\DrupalKernel->handle() (Line: 19)
