Following facebook's GraphAPI docs, i got a post request as seen below:

https://graph.facebook.com/v20.0/{pageid}/photos?access_token={here I insert a permanent PAGE token}&url={here i insert a url of a image that does exist} 

The response of this post request is:

 "error": {     "message": "(#200) The permission(s) publish_actions are not available. It has been deprecated. If you want to provide a way for your app users to share content to Facebook, we encourage you to use our Sharing products instead.",     "type": "OAuthException",     "code": 200,     "fbtrace_id": "Asd0O0G-dN02eCY9jLJjQGG"   } } 

Using the answers from others having the same error, I tried using permanent and short-term USER/PAGE access tokens. All resulted in the exact same error