Update to ver. 0.5 firmware error on python raspberry

I received this error after the update:

pi@raspberrypi:~ $ sudo odrivetool dfu
ODrive control utility v0.5.1
Waiting for ODrive...
Downloading json data from ODrive... (this might take a while)
Found ODrive 207A3589524B (v3.6-56V) with firmware v0.4.11-dev
Checking online for newest firmware... found v0.5.1
Downloading firmware v0.5.1...
Saving configuration to /tmp/odrive-config-207A3589524B.json...
Configuration saved.
Putting device 207A3589524B into DFU mode...
Erasing... done            
Flashing... done            
Verifying... done            
Waiting for the device to reappear...
Traceback (most recent call last):
  File "/usr/local/bin/odrivetool", line 143, in <module>
    odrive.dfu.launch_dfu(args, logger, app_shutdown_token)
  File "/usr/local/lib/python3.7/dist-packages/odrive/dfu.py", line 457, in launch_dfu
    update_device(device, firmware, logger, cancellation_token)
  File "/usr/local/lib/python3.7/dist-packages/odrive/dfu.py", line 421, in update_device
    odrive.configuration.restore_config(device, None, logger)
  File "/usr/local/lib/python3.7/dist-packages/odrive/configuration.py", line 70, in restore_config
    with open(filename) as file:
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/odrive-config-unknownserialnumber.json'
python3: ../../libusb/io.c:2116: handle_events: Assertion `ctx->pollfds_cnt >= internal_nfds' failed.

What is it trying to say and what should I do?

The firmware was fully updated, but then odrivetool couldn’t fetch the serial number anymore and as a consequence aborted before restoring the configuration. What happens if you start odrivetool normally now and type odrv0 [Enter]?

It works just fine. I never tried typing just odrv0 before. Thanks for the tip.