fix settings and type hint

src/EventSubscriber/ResponseSubscriber.php

@@ -54,7 +54,7 @@ class ResponseSubscriber implements EventSubscriberInterface {
   }
 
   public function __construct(ConfigFactoryInterface $config_factory, CurrentRouteMatch $current_route_match) {
-    $this->config = $config_factory->get('jsonapi_links');
+    $this->config = $config_factory->get('jsonapi_links.settings');
     $this->currentRouteMatch = $current_route_match;
   }
 
@@ -100,7 +100,7 @@ class ResponseSubscriber implements EventSubscriberInterface {
   /**
    * Unsets links in JSON:API responses.
    */
-  protected function removeLinks(&$data, ?string $node = NULL) {
+  protected function removeLinks(&$data, string|int|null $node = NULL) {
     if ($node) {
       $this->path[] = $node;
     }