--- a/src/Routing/RouteSubscriber.php	2026-10-20 19:01:59.032512798 +0200
+++ b/src/Routing/RouteSubscriber.php	2026-10-20 19:01:59.059512933 +0200
@@ -38,11 +38,18 @@
 
         case 'entity.menu_link_content.canonical':
         case 'entity.menu_link_content.delete_form':
+          $route->setRequirements(['_custom_access' => '\Drupal\menu_admin_per_menu\Access\MenuAdminPerMenuAccess::menuItemAccess']);
+          break;
+
+        // Keep content_translation's own requirements, which deny access when
+        // menu links are not translatable; replacing them causes a fatal
+        // error on the overview page.
+        // @see https://www.drupal.org/project/menu_admin_per_menu/issues/3219944
         case 'entity.menu_link_content.content_translation_overview':
         case 'entity.menu_link_content.content_translation_add':
         case 'entity.menu_link_content.content_translation_edit':
         case 'entity.menu_link_content.content_translation_delete':
-          $route->setRequirements(['_custom_access' => '\Drupal\menu_admin_per_menu\Access\MenuAdminPerMenuAccess::menuItemAccess']);
+          $route->setRequirement('_custom_access', '\Drupal\menu_admin_per_menu\Access\MenuAdminPerMenuAccess::menuItemAccess');
           break;
 
       }