AWS iOS cloudwatch describeLogStreams uploadsequencetoken 为空

AWS iOS cloudwatch describeLogStreams uploadsequencetoken empty

之前 describeLogStreams 的访问被拒绝,在添加必要的策略后得到修复,但现在有响应,但 uploadSequenceToken(和 nextToken)为空。

    AWSLogs.default().describeLogStreams(req!) { (response, error) in
        if ((error) != nil) {
            Logging.logError("ERROR: AWS CW describe Log Stream error: \(String(describing: error))")
        } else {
            self.nextSequenceToken = response?.logStreams?.first?.uploadSequenceToken
// ^^^^^ above value is nil
        }

有什么想法吗?

日志流看起来是空的。也许现在有none。