Errors out when trying to communicate with or flash toolhead

Followed the manual, dropped the new file where it needs to be, uncommented the MCP2515 line, put the lines in the can0 file as per the instructions. STILL errors out.

biqu@BTT-CB1:~$ python3 ~/CanBoot/scripts/flash_can.py -i can0 -f ~/klipper/out/klipper.bin -u 45eb2c5e37f3
Sending bootloader jump command...
Resetting all bootloader node IDs...
Checking for canboot nodes...
Detected UUID: 45eb2c5e37f3, Application: CanBoot
Attempting to connect to bootloader
CanBoot Connected
Protocol Version: 1.0.0
Block Size: 64 bytes
Application Start: 0x8002000
MCU type: stm32g0b1xx
Verifying canbus connection
Flashing '/home/biqu/klipper/out/klipper.bin'...

[ERROR:root:Can Read Error
Traceback (most recent call last):
File "/usr/lib/python3.9/asyncio/streams.py", line 632, in readuntil
await self._wait_for_data('readuntil')
File "/usr/lib/python3.9/asyncio/streams.py", line 517, in _wait_for_data
await self._waiter
asyncio.exceptions.CancelledError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3.9/asyncio/tasks.py", line 492, in wait_for
fut.result()
asyncio.exceptions.CancelledError

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/biqu/CanBoot/scripts/flash_can.py", line 137, in send_command
ret = await self.node.readuntil()
File "/home/biqu/CanBoot/scripts/flash_can.py", line 287, in readuntil
return await asyncio.wait_for(self._reader.readuntil(sep), timeout)
File "/usr/lib/python3.9/asyncio/tasks.py", line 494, in wait_for
raise exceptions.TimeoutError() from exc
asyncio.exceptions.TimeoutError
ERROR:root:Can Read Error
Traceback (most recent call last):
File "/usr/lib/python3.9/asyncio/streams.py", line 632, in readuntil
await self._wait_for_data('readuntil')
File "/usr/lib/python3.9/asyncio/streams.py", line 517, in _wait_for_data
await self._waiter
asyncio.exceptions.CancelledError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3.9/asyncio/tasks.py", line 492, in wait_for
fut.result()
asyncio.exceptions.CancelledError

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/biqu/CanBoot/scripts/flash_can.py", line 137, in send_command
ret = await self.node.readuntil()
File "/home/biqu/CanBoot/scripts/flash_can.py", line 287, in readuntil
return await asyncio.wait_for(self._reader.readuntil(sep), timeout)
File "/usr/lib/python3.9/asyncio/tasks.py", line 494, in wait_for
raise exceptions.TimeoutError() from exc
asyncio.exceptions.TimeoutError
^CTraceback (most recent call last):
File "/home/biqu/CanBoot/scripts/flash_can.py", line 630, in
main()
File "/home/biqu/CanBoot/scripts/flash_can.py", line 609, in main
loop.run_until_complete(sock.run(intf, uuid, fpath))
File "/usr/lib/python3.9/asyncio/base_events.py", line 629, in run_until_complete
self.run_forever()
File "/usr/lib/python3.9/asyncio/base_events.py", line 596, in run_forever
self._run_once()
File "/usr/lib/python3.9/asyncio/base_events.py", line 1854, in _run_once
event_list = self._selector.select(timeout)
File "/usr/lib/python3.9/selectors.py", line 469, in select
fd_event_list = self._selector.poll(timeout, max_ev)
KeyboardInterrupt