Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-06T16:56:54","request-id":"17f81672-7df2-42a4-8b70-0f59433747c8","client-request-id":"17f81672-7df2-42a4-8b70-0f59433747c8"}}}"