Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-27T19:57:01","request-id":"14a55c18-23bf-414a-a04c-ca4803417ccd","client-request-id":"14a55c18-23bf-414a-a04c-ca4803417ccd"}}}"