If the ERROR container is present in the channel, then the response value will be normal; otherwise the response value will give CONTAINERERR.
如果ERROR容器出现在管道中，那么响应值就是正常的；否则，响应值就为CONTAINERERR。
If the ERROR container is present in the channel, then the response value will be normal; otherwise the response value will give CONTAINERERR.
如果ERROR容器出现在管道中，那么响应值就是正常的；否则，响应值就为CONTAINERERR。
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