Having a single line like that without any context makes it hard to suggest what is wrong.
What other post did you read to find that?
My guess is a node you have does not like having the network pulled out and is crashing Node-RED. Node-RED then restarts and retriggers your Inject node.
So the question is what node is causing the crash.... that isn't something we can tell you without a more complete log output from the error.
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