diff --git a/core/lib/Drupal/Core/EventSubscriber/FinalExceptionSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/FinalExceptionSubscriber.php
index ef0123e08c..4f8dbf90c6 100644
--- a/core/lib/Drupal/Core/EventSubscriber/FinalExceptionSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/FinalExceptionSubscriber.php
@@ -124,7 +124,7 @@ public function onException(ExceptionEvent $event) {
 
     $content_type = $event->getRequest()->getRequestFormat() == 'html' ? 'text/html' : 'text/plain';
     $content = $this->t('The website encountered an unexpected error. Please try again later.');
-    $content .= $message ? '</br></br>' . $message : '';
+    $content .= $message ? '<br /><br />' . $message : '';
     $response = new Response($content, 500, ['Content-Type' => $content_type]);
 
     if ($exception instanceof HttpExceptionInterface) {
diff --git a/core/modules/content_moderation/src/Form/ContentModerationConfigureForm.php b/core/modules/content_moderation/src/Form/ContentModerationConfigureForm.php
index f43451ec63..0156184ef9 100644
--- a/core/modules/content_moderation/src/Form/ContentModerationConfigureForm.php
+++ b/core/modules/content_moderation/src/Form/ContentModerationConfigureForm.php
@@ -104,7 +104,7 @@ public function buildConfigurationForm(array $form, FormStateInterface $form_sta
       $form['entity_types_container']['entity_types'][$entity_type->id()] = [
         'type' => [
           '#type' => 'inline_template',
-          '#template' => '<strong>{{ label }}</strong></br><span id="selected-{{ entity_type_id }}">{{ selected_bundles }}</span>',
+          '#template' => '<strong>{{ label }}</strong><br/><span id="selected-{{ entity_type_id }}">{{ selected_bundles }}</span>',
           '#context' => [
             'label' => $this->t('@bundle types', ['@bundle' => $entity_type->getLabel()]),
             'entity_type_id' => $entity_type->id(),