I'm having a php website with sharing code on facebook and Sharethis buttons and script. The head tag contains the fb:app_id, og:title, og:url,og:image but debugging the URL displays the following error

  {
   "error": {
   "message": "An access token is required to request this resource.",
   "type": "OAuthException",
   "code": 104,
   "fbtrace_id": "GO7opPlWLTI"
   }
 }

The debug page displays this error

fb:app_id hasn't been included in the meta tags. Specify the app ID so that stories shared 
to Facebook will be properly attributed to the app. Alternatively, app_id can be set in url 
when open the share dialog. Otherwise, the default app id( 966242223397117 ) will be assigned

When I use the graph to display the page as what facebook gets I don't find the head tag at all. In php it's included in every page and the source code of my page has no errors.