Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-02T19:48:30","request-id":"55f068ef-1045-498b-8828-ddc7e4236867","client-request-id":"55f068ef-1045-498b-8828-ddc7e4236867"}}}"