Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-07T01:41:22","request-id":"1dca7aaf-bbe8-4887-9834-6240ad5d9296","client-request-id":"1dca7aaf-bbe8-4887-9834-6240ad5d9296"}}}"