[ownedbycats]

Here's the error:

calibre 5.22.1* [64bit]  embedded-python: True is64bit: True
Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: None
Traceback (most recent call last):
  File "runpy.py", line 194, in _run_module_as_main
  File "runpy.py", line 87, in _run_code
  File "site.py", line 82, in <module>
  File "site.py", line 77, in main
  File "site.py", line 49, in run_entry_point
  File "D:\Documents\git\calibre\src\calibre\debug.py", line 264, in main
    calibre(['calibre'] + args[1:])
  File "D:\Documents\git\calibre\src\calibre\gui_launch.py", line 60, in calibre
    print_basic_debug_info()
  File "D:\Documents\git\calibre\src\calibre\debug.py", line 208, in print_basic_debug_info
    from calibre.customize.ui import has_external_plugins, initialized_plugins
  File "D:\Documents\git\calibre\src\calibre\customize\ui.py", line 18, in <module>
    from calibre.customize.builtins import plugins as builtin_plugins
  File "D:\Documents\git\calibre\src\calibre\customize\builtins.py", line 752, in <module>
    from calibre.devices.smart_device_app.driver import SMART_DEVICE_APP
  File "D:\Documents\git\calibre\src\calibre\devices\smart_device_app\driver.py", line 2051, in <module>
    from zeroconf import (
ImportError: cannot import name '_LOCAL_TRAILER' from 'zeroconf' (c:\Program Files\calibre2\app\bin\python-lib.bypy.frozen\zeroconf\__init__.pyc)

I ran a repair install in case it was a broken file and got the same error.