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LogicException: The controller result claims to be providing relevant cache metadata, but leaked metadata was detected. Please ensure you are not rendering content too early. Returned object class: Drupal\rest\ResourceResponse. in Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (line 154 of /srv/bindings/8c5ccf24ccc9492bb85469725da608ea/code/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php).

I am facing this issue when i try to access REST endpoint through ajax get request. Important thing, when i was logged-in then every works find but when i am not logged it it through above exception.

Here is my code

namespace Drupal\one_rest_api\Plugin\rest\resource;  use Drupal\file\Entity\File; use Drupal\image\Entity\ImageStyle; use Drupal\media_entity\Entity\Media; use Drupal\node\Entity\Node; use Drupal\rest\Plugin\ResourceBase; use Drupal\rest\ResourceResponse; use Drupal\Core\Session\AccountProxyInterface; use Drupal\taxonomy\Entity\Term; use Psr\Log\LoggerInterface; use Symfony\Component\DependencyInjection\ContainerInterface; use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException; use Symfony\Component\HttpKernel\Exception\HttpException;  /**  * Provides article resource endpoint  *  * @RestResource(  *   id = "one_article_resource",  *   label = @Translation("One Article Resource"),  *   uri_paths = {  *     "canonical" = "/api/one/v1/articles"  *   }  * )  */ class ArticleResource extends ResourceBase {     /**      * A current user instance.      *      * @var \Drupal\Core\Session\AccountProxyInterface      */     protected $  currentUser;      /**      * Constructs a Drupal\rest\Plugin\ResourceBase object.      *      * @param array $  configuration      *   A configuration array containing information about the plugin instance.      * @param string $  plugin_id      *   The plugin_id for the plugin instance.      * @param mixed $  plugin_definition      *   The plugin implementation definition.      * @param array $  serializer_formats      *   The available serialization formats.      * @param \Psr\Log\LoggerInterface $  logger      *   A logger instance.      * @param \Drupal\Core\Session\AccountProxyInterface $  current_user      *   A current user instance.      */     public function __construct(         array $  configuration,         $  plugin_id,         $  plugin_definition,         array $  serializer_formats,         LoggerInterface $  logger,         AccountProxyInterface $  current_user) {          parent::__construct($  configuration, $  plugin_id, $  plugin_definition, $  serializer_formats, $  logger);          $  this->currentUser = $  current_user;     }      /**      * {@inheritdoc}      */     public static function create(ContainerInterface $  container, array $  configuration, $  plugin_id, $  plugin_definition) {         return new static(             $  configuration,             $  plugin_id,             $  plugin_definition,             $  container->getParameter('serializer.formats'),             $  container->get('logger.factory')->get('one_rest'),             $  container->get('current_user')         );     }     /**      * Responds to GET requests.      *      * Returns a list of bundles for specified entity.      *      * @throws \Symfony\Component\HttpKernel\Exception\HttpException      *   Throws exception expected.      */     public function get() {         global $  base_url;          $  response_result = [];         $  response_code = 200;         // You must to implement the logic of your REST Resource here.         // Use current user after pass authentication to validate access.         if (!$  this->currentUser->hasPermission('access content')) {             throw new AccessDeniedHttpException();         }          $  entities = \Drupal::entityQuery('node')             ->condition('status', 1)             ->condition('type', 'article')             ->condition('langcode','en')             ->notExists('field_f1')             ->sort('created', 'DESC')             ->range(0, 20)             ->execute();          if(!empty($  entities)){             foreach ($  entities as $  node_id) {                 $  node = Node::load($  node_id);                  if(is_object($  node)){                     $  image_url = '';                     $  image_target = $  node->get('field_image')->target_id;                     if(!empty($  image_target)){                         $  media = Media::load($  image_target);                         if(is_object($  media)){                             $  image = File::load($  media->get('field_image')->target_id);                             $  image_url = ImageStyle::load('rest_api')->buildUrl($  image->getFileUri());                         }                     }                      $  output_tags = [];                     $  tags = $  node->get('field_tags')->getValue();                     if(!empty($  tags)){                         foreach($  tags as $  key => $  tag){                             $  term = Term::load($  tag['target_id']);                             $  output_tags[] = $  term->get('name')->value;                         }                     }                      $  result = [                         "nid" => $  node->id(),                         "base_url" => $  base_url,                         "title" => $  node->getTitle(),                         "field_image" => $  image_url,                         "field_tags" => $  output_tags                     ];                      $  response_result[] = $  result;                 }              }         }           if(!empty($  response_result)) {             $  headers = [                 'Access-Control-Allow-Origin' => '*',                 'Access-Control-Allow-Methods' => 'POST, GET, OPTIONS, PATCH, DELETE',                 'Access-Control-Allow-Headers' => 'Authorization'             ];              $  response = new ResourceResponse($  response_result, $  response_code, $  headers);             return $  response;         }          throw new HttpException(t("Empty Response"));     } } 

And Below is my typescript code

load(){      if(this.data){       return Promise.resolve(this.data);     }      return new Promise(resolve => {       this.http.get('https://example.com/api/one/v1/articles?_format=json')         .subscribe(data => {           this.data = data;           resolve(this.data);         },err => {           console.log(err);         });     });    } 

I didn’t understand what i am missing in drupal code

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