Graphing with node red and signalK

[Sailoog]

We would need to isolate the problem.

What happens if you disable all settings (node-red, sensors, actions, NMEA 2K devices, GPIO, 1W...)? Are you generating NMEA 0183 from node-red or NMEA generator?

If there is still crash we would need to see what NMEA 0183 sentence is generating the error, try to open the NMEA 0183 inspector or the opencpn NMEA inspector.