AWS iOS cloudwatch describeLogStreams uploadsequencetoken empty

Earlier was getting access denied for describeLogStreams and after adding the necessary policy got that fixed but now there is response but uploadSequenceToken (and nextToken) are empty.

    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
        }

Any idea?

The log stream looks empty. Maybe there is none for now.