我正在尝试通过监控CloudWatch Logs对失败的SNS推送通知进行故障排除，失败传递的doc sample log包含Option，其中显示如下错误消息：
providerResponse虽然我的失败日志没有这样的参数：
{
"status": "FAILURE",
"notification": {
"timestamp": "2015-01-26 23:29:35.678",
"messageId": "c3ad79b0-8996-550a-8bfa-24f05989898f"
},
"delivery": {
"statusCode": 8,
"dwellTimeMs": 1451,
"token": "examp1e29z6j5c4df46f809505189c4c83fjcgf7f6257e98542d2jt3395kj73",
"attempts": 1,
"providerResponse": "NotificationErrorResponse(command=8, status=InvalidToken, id=1, cause=null)",
"destination": "arn:aws:sns:us-east-1:111122223333:endpoint/APNS_SANDBOX/APNSPushApp/986cb8a1-4f6b-34b1-9a1b-d9e9cb553944"
}
}
我还能在哪里获得SNS故障排除的错误日志？