Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-18T19:57:19","request-id":"041e1f41-3285-41cd-85fb-1eba139144e7","client-request-id":"041e1f41-3285-41cd-85fb-1eba139144e7"}}}"