Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-19T20:59:12","request-id":"aed957c2-3ed3-4ca0-bfa5-9925a34cdcab","client-request-id":"aed957c2-3ed3-4ca0-bfa5-9925a34cdcab"}}}"