hotwire3.subnet_hid assumes subnet.notes is not null, but it's nullable
Either make subnet.notes NOT NULL or update hotwire.subnet_hid to handle null notes fields gracefully (and thereby not return a null value for subnet_hid.subnet_hid)
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Either make subnet.notes NOT NULL or update hotwire.subnet_hid to handle null notes fields gracefully (and thereby not return a null value for subnet_hid.subnet_hid)