Modbus TCP and process.env.NODE_RED_HOME

Hi @CaptClaude

it looks like that node is still using a way of accessing the Node-RED runtime that has been long deprecated and should have been updated years ago.

The 0.20 release of Node-RED changed the internal layout of the code, so the assumptions that node made about how to access the core of the runtime no longer hold true.

I see you've already raised an issue on the node - that's the right first place to start in resolving this.

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