Printer completes start macro, and then won't print

From your log:

...
MCU 'rpi' shutdown: Command request
clocksync state: mcu_freq=50000000 last_clock=112274439459 clock_est=(2224.972 110846774260 49998729.758) min_half_rtt=0.000059 min_rtt_time=790.330 time_avg=2224.972(843.484) clock_avg=110846774260.724(42173140335.283) pred_variance=5317370.244 clock_adj=(8714.405 49998971.250)
Dumping serial stats: bytes_write=14430 bytes_read=46379 bytes_retransmit=0 bytes_invalid=0 send_seq=2377 receive_seq=2377 retransmit_seq=0 srtt=0.000 rttvar=0.000 rto=0.025 ready_bytes=0 upcoming_bytes=0
Dumping send queue 100 messages
...
...
Shutdown due to webhooks request
Once the underlying issue is corrected, use the
"FIRMWARE_RESTART" command to reset the firmware, reload the
config, and restart the host software.
Printer is shutdown
...

You may note this:

If you done that on purpose, you may can post (compressed/zipped) the gcode file you want to print