我正在尝试使用我的程序实现以下目的：在AWS CloudWatch上创建日志组在上述日志组下创建日志流在上述日志流下放置日志事件

所有这些都用go lang

package main

import (
    "time"
    "fmt"
    "github.com/jcxplorer/cwlogger"
    "github.com/aws/aws-sdk-go/service/cloudwatchlogs"
    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/aws"
)

func main() {
    sess := session.Must(session.NewSessionWithOptions(session.Options{
        SharedConfigState: session.SharedConfigEnable,
    }))

    svc := cloudwatchlogs.New(sess)
    logGroupName := "my-log-group";
    logStreamName := "my-log-stream";
    logGroupInput := cloudwatchlogs.CreateLogGroupInput{LogGroupName: &logGroupName}
    svc.CreateLogGroup(&logGroupInput);
    logStreamInput := cloudwatchlogs.CreateLogStreamInput{LogGroupName: &logGroupName, LogStreamName: &logStreamName}
    svc.CreateLogStream(&logStreamInput)

    logevents := make([]*cloudwatchlogs.InputLogEvent, 1)

    logevents = append(logevents, &cloudwatchlogs.InputLogEvent{
        Message:   aws.String("Simple log message"),
        Timestamp: aws.Int64(111),
    })

    p := cloudwatchlogs.PutLogEventsInput{LogEvents: logevents, LogGroupName: &logGroupName, LogStreamName: &logStreamName}
    resp, err := svc.PutLogEvents(&p)
    if err != nil {
        panic(err)
    }
    fmt.Print("Next Token: {}", resp.NextSequenceToken)
}

现在，当我运行上述代码时，它成功创建了日志组和日志流，并且可以在AWS
CloudWatch中进行验证。但是由于某些原因，PutLogEvents失败并显示以下错误：

panic: SerializationException: 
    status code: 400, request id: 0685efcc-47e3-11e9-b528-81f33ec2f468

我不确定这里可能出什么问题。任何建议或指示将非常有帮助。

提前致谢。