Queue error action: What the replication programs do if an error occurs at one of the queues.

Queue error action：如果在某一个队列中发生错误，复制程序将采取的行动。

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What's interesting is that a user didn't even need to be performing the action for the error -- and hijacking -- to occur.

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If an error was intentional, the FAA can take action, officials said.

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We also saw a brief demo of the prototype application, and sure enough, it showed us when an LED block was placed backwards with an error message -- you can see it in action in the video below.

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