[BUGFIX] Initialize Response object correctly for revokeAccessToken (#22

)

The first parameter must not be empty.
Use named parameters to keep the default.

Classes/Controller/RevokeController.php

@@ -38,6 +38,6 @@ public function revokeAccessToken(ServerRequestInterface $request): ResponseInte
     {
         $tokenId = $request->getAttribute('oauth_access_token_id');
         $this->accessTokenRepository->revokeAccessToken($tokenId);
-        return new Response('', 204);
+        return (new Response())->withStatus(204);
     }
 }