Libby Overdrive Plugin not installing (veery low level beginner here)

[pokeman-idk]

Ok so from what I understand this plugin can help me download books from libby and hypothetically send them to my kindle.

When I install the libby overdrive plugin from a file, i get this error message:

calibre, version 8.16.2
ERROR: Unhandled exception: AttributeError:'PolyglotStringIO' object has no attribute 'buffer'

calibre 8.16.2 embedded-python: True
Windows-10-10.0.26100-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.26100')
Python 3.11.14
Windows: ('10', '10.0.26100', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre.exe
Traceback (most recent call last):
File "calibre\gui2\preferences\plugins.py", line 321, in add_plugin
File "calibre\customize\ui.py", line 553, in add_plugin
File "calibre\customize\ui.py", line 87, in load_plugin
File "calibre\customize\zipplugin.py", line 310, in load
File "importlib_init_.py", line 126, in import_module
File "", line 1204, in _gcd_import
File "", line 1176, in _find_and_load
File "", line 1147, in _find_and_load_unlocked
File "", line 690, in _load_unlocked
File "calibre\customize\zipplugin.py", line 209, in exec_module
File "calibre_plugins.overdrive_libby.init", line 35, in
AttributeError: 'PolyglotStringIO' object has no attribute 'buffer'

and then when i install it from the app itself, i get this:

calibre, version 8.16.2
ERROR: Install plugin failed: A problem occurred while installing this plugin. This plugin will now be uninstalled. Please post the error message in details below into the forum thread for this plugin and restart calibre.

Traceback (most recent call last):
File "calibre\gui2\dialogs\plugin_updater.py", line 896, in install_clicked
File "calibre\customize\ui.py", line 553, in add_plugin
File "calibre\customize\ui.py", line 87, in load_plugin
File "calibre\customize\zipplugin.py", line 310, in load
File "importlib_init.py", line 126, in import_module
File "", line 1204, in _gcd_import
File "", line 1176, in _find_and_load
File "", line 1147, in _find_and_load_unlocked
File "", line 690, in _load_unlocked
File "calibre\customize\zipplugin.py", line 209, in exec_module
File "calibre_plugins.overdrive_libby.init", line 35, in
AttributeError: 'PolyglotStringIO' object has no attribute 'buffer'

sorry if this is a really easy or stupid question
thanks in advance!

[ElleKayEm]

This repo is for the old DeDRM Plugin. Nothing to do with the Libby Overdrive plugin.