Do you really have the overview about these 2500 lines of printer.cfg?
Some of the shutdown errors is this:
Transition to shutdown state: Shutdown due to required printer.cfg section(s) missing:
Missing CANCEL_PRINT in on_error_gcode for [virtual_sdcard] section.
or this:
Transition to shutdown state: MCU 'mcu' shutdown: Timer too close
This often indicates the host computer is overloaded. Check
for other processes consuming excessive CPU time, high swap
usage, disk errors, overheating, unstable voltage, or
similar system problems on the host computer.
(See here: Timer too close)