{"code":"upstream_timeout","type":"https://developers.stylumia.com/errors/upstream_timeout","status":504,"title":"Upstream timeout","retryable":true,"meaning":"We were too slow answering, not you. The result is indeterminate.","causes":["A data query exceeded our internal deadline."],"recovery":"Retry with backoff. Reads are safe to repeat - nothing here mutates state.","extensions":[]}