Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-25T12:43:08","request-id":"fa038768-5c83-47ae-b639-a855ea6a3f03","client-request-id":"fa038768-5c83-47ae-b639-a855ea6a3f03"}}}"