Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-15T03:03:57","request-id":"f620f9f5-43f6-48d7-8419-25c2865942f0","client-request-id":"f620f9f5-43f6-48d7-8419-25c2865942f0"}}}"