Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-06T14:22:44","request-id":"3fbc3097-afb8-439f-a491-acd203c025db","client-request-id":"3fbc3097-afb8-439f-a491-acd203c025db"}}}"