iot 路由到kafka 失败，提示topic不存在，但是topic是存在的

使用iot core 路由规则到 自建kafka, 提示

 "failures": [
        {
            "failedAction": "KafkaAction",
            "failedResource": "fromIot",
            "errorMessage": "KafkaAction failed to send a message to the specified bootstrap servers. Topic fromIot not present in metadata after 1000 ms.. Message arrived on: $aws/events/presence/disconnected/17c, Action: kafka, topic: fromIot, bootstrap.servers: kafka."
        }
    ]

前两天还是成功的。topic存在，没有改变，我自己使用kafka client 发消息成功，并且可以可以收到kafka消息