modules/jsonapi_file_upload/src/Controller/RequestHandler.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/modules/jsonapi_file_upload/src/Controller/RequestHandler.php b/modules/jsonapi_file_upload/src/Controller/RequestHandler.php
index d39c41f..b531ce4 100644
--- a/modules/jsonapi_file_upload/src/Controller/RequestHandler.php
+++ b/modules/jsonapi_file_upload/src/Controller/RequestHandler.php
@@ -140,10 +140,11 @@ class RequestHandler {
     static::validate($entity, [$file_field_name]);
     $entity->save();
 
-    $route_parameters = [$resource_type->getEntityTypeId() => $entity->uuid()];
+    $route_parameters = ['entity' => $entity->uuid()];
     $route_name = sprintf('jsonapi.%s.%s.related', $resource_type->getTypeName(), $file_field_name);
     $related_url = Url::fromRoute($route_name, $route_parameters)->toString(TRUE);
-    return $this->httpKernel->handle(Request::create($related_url->getGeneratedUrl()), HttpKernelInterface::SUB_REQUEST);
+    $request = Request::create($related_url->getGeneratedUrl(), 'GET', [], $request->cookies->all(), [], $request->server->all());
+    return $this->httpKernel->handle($request, HttpKernelInterface::SUB_REQUEST);
   }
 
   /**