Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-01-31T08:34:09","request-id":"a7c4a5d7-5679-42a0-ad51-538d513d73ff","client-request-id":"a7c4a5d7-5679-42a0-ad51-538d513d73ff"}}}"