Been seeing the error below for two days in SmartThings Node Proxy (SNTP) on a rpi3b+ with latest Raspian, node, etc:
[stnp] Notify error: Error: socket hang up
Is it related to the thread below where they mention a hub firmware update has broken messaging (MQTT on local LAN)?
Might explain a bunch of what people are seeing.
Thread:
Firmware Update with thread with additional info: