Using Post method in Faceook Graph API

Question

When I use graph API to post on a Facebook page it's not working, it responds with an ID and URL but instead it should be responding with a post id.

When I open the URL it gives this error:

{
   "error": {
      "message": "An access token is required to request this resource.",
      "type": "OAuthException",
      "code": 104,
      "fbtrace_id": "FdvAOg41htB"
   }
}

I'm providing the right access token but still it's not posting.