comparison core/modules/rest/src/EventSubscriber/ResourceResponseSubscriber.php @ 5:12f9dff5fda9 tip

Update to Drupal core 8.7.1

   protected function flattenResponse(ResourceResponseInterface $response) {
     $final_response = ($response instanceof CacheableResponseInterface) ? new CacheableResponse() : new Response();
     $final_response->setContent($response->getContent());
     $final_response->setStatusCode($response->getStatusCode());
     $final_response->setProtocolVersion($response->getProtocolVersion());
-    $final_response->setCharset($response->getCharset());
+    if ($response->getCharset()) {
+      $final_response->setCharset($response->getCharset());
+    }
     $final_response->headers = clone $response->headers;
     if ($final_response instanceof CacheableResponseInterface) {
       $final_response->addCacheableDependency($response->getCacheableMetadata());
     }
     return $final_response;