Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-01T20:38:53","request-id":"27a8ab1d-b78d-4757-832d-d1c9453c79ff","client-request-id":"27a8ab1d-b78d-4757-832d-d1c9453c79ff"}}}"