If I am not mistaken that is a Thermal Runaway error meaning the machine basically lost track of the temperature.
Assuming it appears to work properly most of the time (after the error happened) I would check all the wiring from the thermistor to the board. Hook the machine up to your computer so you can monitor the temperature and wiggle the wiring along the path and see if it spikes of drops (you can do this at room temperature).
It’s likely the wire to the thermistor has come loose or been pinched at some point (also check the plugs).
Just another note, .45 layer height is very high, are you using a .6mm nozzle or larger? if not that’s too high.