$ qmk flash $HOME/Downloads/v4_us_v1.4.bin                      
Flashing binary firmware...
Please reset your keyboard into bootloader mode now!
Press Ctrl-C to exit.

<class 'usb.core.NoBackendError'>
☒ No backend available
Traceback (most recent call last):
  File "/home/quinn/.local/lib/python3.10/site-packages/milc/milc.py", line 528, in __call__
    return self.__call__()
  File "/home/quinn/.local/lib/python3.10/site-packages/milc/milc.py", line 533, in __call__
    return self._subcommand(self)
  File "/home/quinn/qmk_firmware/lib/python/qmk/decorators.py", line 27, in wrapper
    return func(*args, **kwargs)
  File "/home/quinn/qmk_firmware/lib/python/qmk/decorators.py", line 47, in wrapper
    return func(*args, **kwargs)
  File "/home/quinn/qmk_firmware/lib/python/qmk/cli/flash.py", line 93, in flash
    return _flash_binary(cli.args.filename, cli.args.mcu)
  File "/home/quinn/qmk_firmware/lib/python/qmk/cli/flash.py", line 59, in _flash_binary
    err, msg = flasher(mcu, filename)
  File "/home/quinn/qmk_firmware/lib/python/qmk/flashers.py", line 200, in flasher
    bl, details = _find_bootloader()
  File "/home/quinn/qmk_firmware/lib/python/qmk/flashers.py", line 88, in _find_bootloader
    dev = _find_usb_device(vid_hex, pid_hex)
  File "/home/quinn/qmk_firmware/lib/python/qmk/flashers.py", line 71, in _find_usb_device
    return usb.core.find(idVendor=vid_hex, idProduct=pid_hex)
  File "/home/quinn/.local/lib/python3.10/site-packages/usb/core.py", line 1309, in find
    raise NoBackendError('No backend available')
usb.core.NoBackendError: No backend available

Ψ QMK Doctor is checking your environment.
Ψ CLI version: 1.1.1
Ψ QMK home: /home/quinn/qmk_firmware
Ψ Detected Linux (Ubuntu 22.04.2 LTS).
Ψ Git branch: master
Ψ Repo version: 0.20.1
Ψ - Latest master: 2023-03-29 01:24:53  0900 (a6b2b1ca41) -- Add new keyboard Tightwriter (#20136)
Ψ - Latest upstream/master: 2023-03-29 01:24:53  0900 (a6b2b1ca41) -- Add new keyboard Tightwriter (#20136)
Ψ - Latest upstream/develop: None
Ψ - Common ancestor with upstream/master: 2023-03-29 01:24:53  0900 (a6b2b1ca41) -- Add new keyboard Tightwriter (#20136)
Ψ - Common ancestor with upstream/develop: None
Ψ All dependencies are installed.
Ψ Found arm-none-eabi-gcc version 10.3.1
Ψ Found avr-gcc version 5.4.0
Ψ Found avrdude version 6.3-20171130
Ψ Found dfu-programmer version 0.6.1
Ψ Found dfu-util version 0.9
Ψ Submodules are up to date.
Ψ Submodule status:
Ψ - lib/chibios: 2023-01-03 19:29:26  0000 --  (0062927e3)
Ψ - lib/chibios-contrib: 2023-01-11 16:42:27  0100 --  (a224be15)
Ψ - lib/googletest: 2021-06-11 06:37:43 -0700 --  (e2239ee6)
Ψ - lib/lufa: 2022-08-26 12:09:55  1000 --  (549b97320)
Ψ - lib/vusb: 2022-06-13 09:18:17  1000 --  (819dbc1)
Ψ - lib/printf: 2022-06-29 23:59:58  0300 --  (c2e3b4e)
Ψ - lib/pico-sdk: 2023-02-12 20:19:37  0100 --  (a3398d8)
Ψ - lib/lvgl: 2022-04-11 04:44:53 -0600 --  (e19410f8)
Ψ QMK is ready to go