Klipper Disconnects from MCU After Printing 3-5 Layers

Your actual error message is

Heater extruder not heating at expected rate
Transition to shutdown state: Heater extruder not heating at expected rate
See the 'verify_heater' section in docs/Config_Reference.md
for the parameters that control this check.

and the affected heater is your hotend:

image

See Heater <name> not heating at expected rate