failed to load (anki 25 , python 3.13)

[sv3ndk]

Problem description

Just installed anki, then the plug-in.

Upon restart the plugin fails to start:

With the following info

Anki 25.09.2 (3890e12c) (ao)
Python 3.13.5 Qt 6.9.1 PyQt 6.9.1
Platform: macOS-15.6.1-arm64-arm-64bit-Mach-O

When loading Syntax Highlighting for Code:
Traceback (most recent call last):
  File "/Users/svend/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/aqt/addons.py", line 250, in loadAddons
    __import__(addon.dir_name)
    ~~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/Users/svend/Library/Application Support/Anki2/addons21/1463041493/__init__.py", line 15, in <module>
    from . import main
  File "/Users/svend/Library/Application Support/Anki2/addons21/1463041493/main.py", line 21, in <module>
    from .consts import *  # import addon_path
    ^^^^^^^^^^^^^^^^^^^^^
  File "/Users/svend/Library/Application Support/Anki2/addons21/1463041493/consts.py", line 22, in <module>
    addon_path = os.path.dirname(__file__).decode(sys_encoding)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'str' object has no attribute 'decode'. Did you mean: 'encode'?

Checklist

Please replace the space inside the brackets with an x if the following items apply:

• I've restarted Anki to see if it helps
• I've verified that I use the latest version of the add-on by redownloading it from AnkiWeb
• I've verified that I use the latest version of Anki by checking at https://apps.ankiweb.net#download
• I've tried to disable other add-ons to see if there are any interactions present
• My issue disappears when I hold shift while starting Anki.
• I've checked if anyone else reported this problem before by looking through the issue reports. I also checked to see if there is a section about known issues in the add-on description, documentation, or README.

Information about your Anki set-up

Anki 25.09.2 (3890e12c) (ao)
Python 3.13.5 Qt 6.9.1 PyQt 6.9.1
Platform: macOS-15.6.1-arm64-arm-64bit-Mach-O

===Add-ons (active)===
(add-on provided name [Add-on folder, installed at, version, is config changed])
Syntax Highlighting for Code ['1463041493', 2018-10-07T03:31, 'None', '']
The KING of Button Add-ons ['374005964', 2025-07-28T13:25, 'None', '']

===IDs of active AnkiWeb add-ons===
1463041493 374005964

===Add-ons (inactive)===
(add-on provided name [Add-on folder, installed at, version, is config changed])