[reader_]

This is what i get on running calibre-debug-g:

calibre-debug -g
calibre 4.99.4 embedded-python: False is64bit: True
Linux-5.6.0-1-amd64-x86_64-with-glibc2.29 Linux ('64bit', 'ELF')
('Linux', '5.6.0-1-amd64', '#1 SMP Debian 5.6.7-1 (2020-04-29)')
Python 3.8.3rc1
Interface language: None
Failed to initialize plugin: '/home/shadead/.config/calibre/plugins/Barnes & Noble.zip'
Traceback (most recent call last):
File "/usr/lib/calibre/calibre/customize/ui.py", line 703, in initialize_plugins
plugin = load_plugin(zfp) if not isinstance(zfp, type) else zfp
File "/usr/lib/calibre/calibre/customize/ui.py", line 61, in load_plugin
return loader.load(path_to_zip_file)
File "/usr/lib/calibre/calibre/customize/zipplugin.py", line 202, in load
m = importlib.import_module(plugin_module)
File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
File "<frozen importlib._bootstrap>", line 618, in _load_backward_compatible
File "/usr/lib/calibre/calibre/customize/zipplugin.py", line 184, in load_module
exec(compiled, mod.__dict__)
File "calibre_plugins.barnes_noble.__init__", line 11, in <module>
ImportError: cannot import name 'quote' from 'urllib' (/usr/lib/python3.8/urllib/__init__.py)
Successfully initialized third party plugins: Open With (1, 5, 12) && Reading List (1, 6, 7)
Turning on automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 96.11191135734073 x 96.09458128078816
physicalDpi: 102.04823529411765 x 102.66947368421053
Using calibre Qt style: True
Traceback (most recent call last):
File "/usr/bin/calibre-debug", line 20, in <module>
sys.exit(main())
File "/usr/lib/calibre/calibre/debug.py", line 277, in main
calibre(['calibre'] + args[1:])
File "/usr/lib/calibre/calibre/gui_launch.py", line 73, in calibre
main(args)
File "/usr/lib/calibre/calibre/gui2/main.py", line 543, in main
listener = create_listener()
File "/usr/lib/calibre/calibre/gui2/main.py", line 514, in create_listener
return Listener(address=gui_socket_address())
File "/usr/lib/calibre/calibre/utils/ipc/server.py", line 110, in __init__
self._listener._unlink.cancel()
AttributeError: 'NoneType' object has no attribute 'cancel'

What does this mean? What can i do?