BUG: GitHub-Authentication does not work

[BerkeAras]

GitHub-Authentication does not work. Response:

{
  "error": {
    "link": null,
    "message": "405 Method Not Allowed: The method is not allowed for the requested URL.",
    "type": "MethodNotAllowed"
  },
  "meta": {
    "status": 405,
    "request_id": "eb1e407d-948a-4462-a872-a28e860055d9",
    "version": "2.0.0-sdlc-beta.0"
  }
}