GET /v2/access-tokens/{uuid} response 500 instead of 404

Docker Hub
1

Hello, since this weekend the REST API

GET https://hub.docker.com/v2/access-tokens/{uuid}

started to respond with 500 instead of 404 for unknown tokens. The body of such response is

{
  "errinfo": {},
  "message": "failed to get access token"
}

Is this intended behavior or an error? Maybe I do the calls wrong way?